diff --git a/src/components/ImportSecretModal.tsx b/src/components/ImportSecretModal.tsx
new file mode 100644
index 0000000..2a83999
--- /dev/null
+++ b/src/components/ImportSecretModal.tsx
@@ -0,0 +1,46 @@
+import {
+  Center,
+  Flex,
+  Modal,
+  ModalBody,
+  ModalCloseButton,
+  ModalContent,
+  ModalHeader,
+  ModalOverlay,
+  Tabs,
+  Text,
+} from '@chakra-ui/react';
+
+import { FileInput } from '~/components/FileInput';
+
+export interface ImportSecretModalProps {
+  clientName?: React.ReactNode;
+  children: React.ReactNode;
+  show: boolean;
+  onClose: () => void;
+  onImport: (file: File) => void;
+}
+
+export function ImportSecretModal({ clientName, children, show, onClose, onImport }: ImportSecretModalProps) {
+  const handleFileReceived = (files: File[]) => onImport(files[0]);
+
+  return (
+    <Modal isOpen={show} onClose={onClose} closeOnOverlayClick={false} scrollBehavior="inside" size="xl">
+      <ModalOverlay />
+      <ModalContent>
+        <ModalHeader>导入密钥数据库</ModalHeader>
+        <ModalCloseButton />
+        <Flex as={ModalBody} gap={2} flexDir="column" flex={1}>
+          <Center>
+            <FileInput onReceiveFiles={handleFileReceived}>拖放或点我选择含有密钥的数据库文件</FileInput>
+          </Center>
+
+          <Text mt={2}>选择你的{clientName && <>「{clientName}」</>}客户端平台以查看对应说明：</Text>
+          <Flex as={Tabs} variant="enclosed" flexDir="column" flex={1} minH={0}>
+            {children}
+          </Flex>
+        </Flex>
+      </ModalContent>
+    </Modal>
+  );
+}
diff --git a/src/features/settings/Settings.tsx b/src/features/settings/Settings.tsx
index 3d93f7b..a59155b 100644
--- a/src/features/settings/Settings.tsx
+++ b/src/features/settings/Settings.tsx
@@ -26,9 +26,11 @@ import { useState } from 'react';
 import { MdExpandMore, MdMenu, MdOutlineSettingsBackupRestore } from 'react-icons/md';
 import { useAppDispatch } from '~/hooks';
 import { commitStagingChange, discardStagingChanges } from './settingsSlice';
+import { PanelKWMv2Key } from './panels/PanelKWMv2Key';
 
 const TABS: { name: string; Tab: () => JSX.Element }[] = [
   { name: 'QMCv2 密钥', Tab: PanelQMCv2Key },
+  { name: 'KWMv2 密钥', Tab: PanelKWMv2Key },
   {
     name: '其它／待定',
     Tab: () => <Text>这里空空如也～</Text>,
diff --git a/src/features/settings/keyFormats.ts b/src/features/settings/keyFormats.ts
new file mode 100644
index 0000000..65ce879
--- /dev/null
+++ b/src/features/settings/keyFormats.ts
@@ -0,0 +1,67 @@
+import { nanoid } from 'nanoid';
+import { objectify } from 'radash';
+
+export function productionKeyToStaging<S, P extends Record<string, unknown>>(
+  src: P,
+  make: (k: keyof P, v: P[keyof P]) => null | S
+): S[] {
+  const result: S[] = [];
+  for (const [key, value] of Object.entries(src)) {
+    const item = make(key, value as P[keyof P]);
+    if (item) {
+      result.push(item);
+    }
+  }
+  return result;
+}
+export function stagingKeyToProduction<S, P>(src: S[], toKey: (s: S) => keyof P, toValue: (s: S) => P[keyof P]): P {
+  return objectify(src, toKey, toValue) as P;
+}
+
+// QMCv2 (QQ)
+export interface StagingQMCv2Key {
+  id: string;
+  name: string;
+  ekey: string;
+}
+
+export type ProductionQMCv2Keys = Record<string /* filename */, string /* ekey */>;
+
+export const qmc2StagingToProductionKey = (key: StagingQMCv2Key) => key.name.normalize();
+export const qmc2StagingToProductionValue = (key: StagingQMCv2Key) => key.ekey.trim();
+export const qmc2ProductionToStaging = (
+  key: keyof ProductionQMCv2Keys,
+  value: ProductionQMCv2Keys[keyof ProductionQMCv2Keys]
+): StagingQMCv2Key => {
+  return {
+    id: nanoid(),
+    name: key.normalize(),
+    ekey: value.trim(),
+  };
+};
+
+// KWMv2 (KuWo)
+
+export interface StagingKWMv2Key {
+  id: string;
+  rid: string;
+  quality: string;
+  ekey: string;
+}
+
+export type ProductionKWMv2Keys = Record<string /* `${rid}-${quality}` */, string /* ekey */>;
+
+export const kwm2StagingToProductionKey = (key: StagingKWMv2Key) => `${key.rid}-${key.quality}`;
+export const kwm2StagingToProductionValue = (key: StagingKWMv2Key) => key.ekey;
+export const kwm2ProductionToStaging = (
+  key: keyof ProductionKWMv2Keys,
+  value: ProductionKWMv2Keys[keyof ProductionKWMv2Keys]
+): null | StagingKWMv2Key => {
+  if (typeof value !== 'string') return null;
+
+  const m = key.match(/^(\d+)-(\w+)$/);
+  if (!m) return null;
+
+  const [_, rid, quality] = m;
+  return { id: nanoid(), rid, quality, ekey: value };
+};
diff --git a/src/features/settings/panels/KWMv2/KWMv2EKeyItem.tsx b/src/features/settings/panels/KWMv2/KWMv2EKeyItem.tsx
new file mode 100644
index 0000000..35244b4
--- /dev/null
+++ b/src/features/settings/panels/KWMv2/KWMv2EKeyItem.tsx
@@ -0,0 +1,76 @@
+import {
+  HStack,
+  Icon,
+  IconButton,
+  Input,
+  InputGroup,
+  InputLeftElement,
+  InputRightElement,
+  ListItem,
+  Text,
+  VStack,
+} from '@chakra-ui/react';
+import { MdDelete, MdVpnKey } from 'react-icons/md';
+import { kwm2DeleteKey, kwm2UpdateKey } from '../../settingsSlice';
+import { useAppDispatch } from '~/hooks';
+import { memo } from 'react';
+import { StagingKWMv2Key } from '../../keyFormats';
+
+export const KWMv2EKeyItem = memo(({ id, ekey, quality, rid, i }: StagingKWMv2Key & { i: number }) => {
+  const dispatch = useAppDispatch();
+
+  const updateKey = (prop: keyof StagingKWMv2Key, e: React.ChangeEvent<HTMLInputElement>) =>
+    dispatch(kwm2UpdateKey({ id, field: prop, value: e.target.value }));
+  const deleteKey = () => dispatch(kwm2DeleteKey({ id }));
+
+  return (
+    <ListItem mt={0} pt={2} pb={2} _even={{ bg: 'gray.50' }}>
+      <HStack>
+        <Text w="2em" textAlign="center">
+          {i + 1}
+        </Text>
+
+        <VStack flex={1}>
+          <HStack flex={1} w="full">
+            <Input
+              variant="flushed"
+              placeholder="资源 ID"
+              value={rid}
+              onChange={(e) => updateKey('rid', e)}
+              type="number"
+              maxW="8em"
+            />
+            <Input
+              variant="flushed"
+              placeholder="音质格式"
+              value={quality}
+              onChange={(e) => updateKey('quality', e)}
+              flex={1}
+            />
+          </HStack>
+
+          <InputGroup size="xs">
+            <InputLeftElement pr="2">
+              <Icon as={MdVpnKey} />
+            </InputLeftElement>
+            <Input variant="flushed" placeholder="密钥" value={ekey} onChange={(e) => updateKey('ekey', e)} />
+            <InputRightElement>
+              <Text pl="2" color={ekey.length ? 'green.500' : 'red.500'}>
+                <code>{ekey.length || '?'}</code>
+              </Text>
+            </InputRightElement>
+          </InputGroup>
+        </VStack>
+
+        <IconButton
+          aria-label="删除该密钥"
+          icon={<Icon as={MdDelete} boxSize={6} />}
+          variant="ghost"
+          colorScheme="red"
+          type="button"
+          onClick={deleteKey}
+        />
+      </HStack>
+    </ListItem>
+  );
+});
diff --git a/src/features/settings/panels/PanelKWMv2Key.tsx b/src/features/settings/panels/PanelKWMv2Key.tsx
new file mode 100644
index 0000000..80a0cb5
--- /dev/null
+++ b/src/features/settings/panels/PanelKWMv2Key.tsx
@@ -0,0 +1,94 @@
+import {
+  Box,
+  Button,
+  ButtonGroup,
+  Code,
+  Flex,
+  HStack,
+  Heading,
+  Icon,
+  IconButton,
+  List,
+  Menu,
+  MenuButton,
+  MenuDivider,
+  MenuItem,
+  MenuList,
+  Text,
+  useToast,
+} from '@chakra-ui/react';
+import { useDispatch, useSelector } from 'react-redux';
+import { kwm2AddKey, kwm2ClearKeys } from '../settingsSlice';
+import { selectStagingKWMv2Keys } from '../settingsSelector';
+import { useState } from 'react';
+import { MdAdd, MdDeleteForever, MdExpandMore, MdFileUpload } from 'react-icons/md';
+import { KWMv2EKeyItem } from './KWMv2/KWMv2EKeyItem';
+import { ImportSecretModal } from '~/components/ImportSecretModal';
+
+export function PanelKWMv2Key() {
+  const toast = useToast();
+  const dispatch = useDispatch();
+  const kwm2Keys = useSelector(selectStagingKWMv2Keys);
+  const [showImportModal, setShowImportModal] = useState(false);
+
+  const addKey = () => dispatch(kwm2AddKey());
+  const clearAll = () => dispatch(kwm2ClearKeys());
+  const handleSecretImport = () => {
+    toast({
+      title: '尚未实现',
+      isClosable: true,
+      status: 'error',
+    });
+  };
+
+  return (
+    <Flex minH={0} flexDir="column" flex={1}>
+      <Heading as="h2" size="lg">
+        酷我解密密钥（KwmV2）
+      </Heading>
+
+      <Text>
+        酷我安卓版本的「臻品音质」已经换用 V2 版，后缀名为 <Code>mflac</Code> 或沿用旧的 <Code>kwm</Code>。{''}
+        该格式需要提取密钥后才能正常解密。
+      </Text>
+
+      <HStack pb={2} pt={2}>
+        <ButtonGroup isAttached colorScheme="purple" variant="outline">
+          <Button onClick={addKey} leftIcon={<Icon as={MdAdd} />}>
+            添加一条密钥
+          </Button>
+          <Menu>
+            <MenuButton as={IconButton} icon={<MdExpandMore />}></MenuButton>
+            <MenuList>
+              <MenuItem onClick={() => setShowImportModal(true)} icon={<Icon as={MdFileUpload} boxSize={5} />}>
+                从文件导入密钥
+              </MenuItem>
+              <MenuDivider />
+              <MenuItem color="red" onClick={clearAll} icon={<Icon as={MdDeleteForever} boxSize={5} />}>
+                清空密钥
+              </MenuItem>
+            </MenuList>
+          </Menu>
+        </ButtonGroup>
+      </HStack>
+
+      <Box flex={1} minH={0} overflow="auto" pr="4">
+        <List spacing={3}>
+          {kwm2Keys.map(({ id, ekey, quality, rid }, i) => (
+            <KWMv2EKeyItem key={id} id={id} ekey={ekey} quality={quality} rid={rid} i={i} />
+          ))}
+        </List>
+        {kwm2Keys.length === 0 && <Text>还没有添加密钥。</Text>}
+      </Box>
+
+      <ImportSecretModal
+        clientName="QQ 音乐"
+        show={showImportModal}
+        onClose={() => setShowImportModal(false)}
+        onImport={handleSecretImport}
+      >
+        尚未实现
+      </ImportSecretModal>
+    </Flex>
+  );
+}
diff --git a/src/features/settings/panels/PanelQMCv2Key.tsx b/src/features/settings/panels/PanelQMCv2Key.tsx
index 52856f2..e18709d 100644
--- a/src/features/settings/panels/PanelQMCv2Key.tsx
+++ b/src/features/settings/panels/PanelQMCv2Key.tsx
@@ -14,19 +14,33 @@ import {
   MenuDivider,
   MenuItem,
   MenuList,
+  Tab,
+  TabList,
+  TabPanel,
+  TabPanels,
   Text,
   Tooltip,
+  useToast,
 } from '@chakra-ui/react';
 import { useDispatch, useSelector } from 'react-redux';
-import { qmc2AddKey, qmc2AllowFuzzyNameSearch, qmc2ClearKeys } from '../settingsSlice';
+import { qmc2AddKey, qmc2AllowFuzzyNameSearch, qmc2ClearKeys, qmc2ImportKeys } from '../settingsSlice';
 import { selectStagingQMCv2Settings } from '../settingsSelector';
 import React, { useState } from 'react';
 import { MdAdd, MdDeleteForever, MdExpandMore, MdFileUpload } from 'react-icons/md';
-import { ImportFileModal } from './QMCv2/ImportFileModal';
-import { KeyInput } from './QMCv2/KeyInput';
+import { QMCv2EKeyItem } from './QMCv2/QMCv2EKeyItem';
 import { InfoOutlineIcon } from '@chakra-ui/icons';
+import { ImportSecretModal } from '~/components/ImportSecretModal';
+import { StagingQMCv2Key } from '../keyFormats';
+import { DatabaseKeyExtractor } from '~/util/DatabaseKeyExtractor';
+import { MMKVParser } from '~/util/MMKVParser';
+import { getFileName } from '~/util/pathHelper';
+import { InstructionsAndroid } from './QMCv2/InstructionsAndroid';
+import { InstructionsIOS } from './QMCv2/InstructionsIOS';
+import { InstructionsMac } from './QMCv2/InstructionsMac';
+import { InstructionsPC } from './QMCv2/InstructionsPC';
 
 export function PanelQMCv2Key() {
+  const toast = useToast();
   const dispatch = useDispatch();
   const { keys: qmc2Keys, allowFuzzyNameSearch } = useSelector(selectStagingQMCv2Settings);
   const [showImportModal, setShowImportModal] = useState(false);
@@ -38,6 +52,44 @@ export function PanelQMCv2Key() {
     dispatch(qmc2AllowFuzzyNameSearch({ enable: e.target.checked }));
   };
 
+  const handleSecretImport = async (file: File) => {
+    try {
+      const fileBuffer = await file.arrayBuffer();
+
+      let qmc2Keys: null | Omit<StagingQMCv2Key, 'id'>[] = null;
+
+      if (/[_.]db$/i.test(file.name)) {
+        const extractor = await DatabaseKeyExtractor.getInstance();
+        qmc2Keys = extractor.extractQmAndroidDbKeys(fileBuffer);
+        if (!qmc2Keys) {
+          alert(`不是支持的 SQLite 数据库文件。\n表名：${qmc2Keys}`);
+          return;
+        }
+      } else if (/MMKVStreamEncryptId|filenameEkeyMap/i.test(file.name)) {
+        const fileBuffer = await file.arrayBuffer();
+        const map = MMKVParser.toStringMap(new DataView(fileBuffer));
+        qmc2Keys = Array.from(map.entries(), ([name, ekey]) => ({ name: getFileName(name), ekey }));
+      }
+
+      if (qmc2Keys) {
+        dispatch(qmc2ImportKeys(qmc2Keys));
+        setShowImportModal(false);
+        toast({
+          title: `导入成功 (${qmc2Keys.length})`,
+          description: '记得保存更改来应用。',
+          isClosable: true,
+          duration: 5000,
+          status: 'success',
+        });
+      } else {
+        alert(`不支持的文件：${file.name}`);
+      }
+    } catch (e) {
+      console.error('error during import: ', e);
+      alert(`导入数据库时发生错误：${e}`);
+    }
+  };
+
   return (
     <Flex minH={0} flexDir="column" flex={1}>
       <Heading as="h2" size="lg">
@@ -99,14 +151,40 @@ export function PanelQMCv2Key() {
 
       <Box flex={1} minH={0} overflow="auto" pr="4">
         <List spacing={3}>
-          {qmc2Keys.map(({ id, key, name }, i) => (
-            <KeyInput key={id} id={id} ekey={key} name={name} i={i} />
+          {qmc2Keys.map(({ id, ekey, name }, i) => (
+            <QMCv2EKeyItem key={id} id={id} ekey={ekey} name={name} i={i} />
           ))}
         </List>
         {qmc2Keys.length === 0 && <Text>还没有添加密钥。</Text>}
       </Box>
 
-      <ImportFileModal show={showImportModal} onClose={() => setShowImportModal(false)} />
+      <ImportSecretModal
+        clientName="QQ 音乐"
+        show={showImportModal}
+        onClose={() => setShowImportModal(false)}
+        onImport={handleSecretImport}
+      >
+        <TabList>
+          <Tab>安卓</Tab>
+          <Tab>iOS</Tab>
+          <Tab>Mac</Tab>
+          <Tab>Windows</Tab>
+        </TabList>
+        <TabPanels flex={1} overflow="auto">
+          <TabPanel>
+            <InstructionsAndroid />
+          </TabPanel>
+          <TabPanel>
+            <InstructionsIOS />
+          </TabPanel>
+          <TabPanel>
+            <InstructionsMac />
+          </TabPanel>
+          <TabPanel>
+            <InstructionsPC />
+          </TabPanel>
+        </TabPanels>
+      </ImportSecretModal>
     </Flex>
   );
 }
diff --git a/src/features/settings/panels/QMCv2/KeyInput.tsx b/src/features/settings/panels/QMCv2/QMCv2EKeyItem.tsx
similarity index 86%
rename from src/features/settings/panels/QMCv2/KeyInput.tsx
rename to src/features/settings/panels/QMCv2/QMCv2EKeyItem.tsx
index 77d193e..bf133d0 100644
--- a/src/features/settings/panels/QMCv2/KeyInput.tsx
+++ b/src/features/settings/panels/QMCv2/QMCv2EKeyItem.tsx
@@ -15,10 +15,10 @@ import { qmc2DeleteKey, qmc2UpdateKey } from '../../settingsSlice';
 import { useAppDispatch } from '~/hooks';
 import { memo } from 'react';
 
-export const KeyInput = memo(({ id, name, ekey, i }: { id: string; name: string; ekey: string; i: number }) => {
+export const QMCv2EKeyItem = memo(({ id, name, ekey, i }: { id: string; name: string; ekey: string; i: number }) => {
   const dispatch = useAppDispatch();
 
-  const updateKey = (prop: 'name' | 'key', e: React.ChangeEvent<HTMLInputElement>) =>
+  const updateKey = (prop: 'name' | 'ekey', e: React.ChangeEvent<HTMLInputElement>) =>
     dispatch(qmc2UpdateKey({ id, field: prop, value: e.target.value }));
   const deleteKey = () => dispatch(qmc2DeleteKey({ id }));
 
@@ -36,7 +36,7 @@ export const KeyInput = memo(({ id, name, ekey, i }: { id: string; name: string;
             <InputLeftElement pr="2">
               <Icon as={MdVpnKey} />
             </InputLeftElement>
-            <Input variant="flushed" placeholder="密钥" value={ekey} onChange={(e) => updateKey('key', e)} />
+            <Input variant="flushed" placeholder="密钥" value={ekey} onChange={(e) => updateKey('ekey', e)} />
             <InputRightElement>
               <Text pl="2" color={ekey.length ? 'green.500' : 'red.500'}>
                 <code>{ekey.length || '?'}</code>
diff --git a/src/features/settings/settingsSelector.ts b/src/features/settings/settingsSelector.ts
index f53f796..3798f41 100644
--- a/src/features/settings/settingsSelector.ts
+++ b/src/features/settings/settingsSelector.ts
@@ -6,6 +6,8 @@ import { hasOwn } from '~/util/objects';
 export const selectStagingQMCv2Settings = (state: RootState) => state.settings.staging.qmc2;
 export const selectFinalQMCv2Settings = (state: RootState) => state.settings.production.qmc2;
 
+export const selectStagingKWMv2Keys = (state: RootState) => state.settings.staging.kwm2.keys;
+
 export const selectDecryptOptionByFile = (state: RootState, name: string): DecryptCommandOptions => {
   const normalizedName = name.normalize();
 
diff --git a/src/features/settings/settingsSlice.ts b/src/features/settings/settingsSlice.ts
index dacd10b..e5722e2 100644
--- a/src/features/settings/settingsSlice.ts
+++ b/src/features/settings/settingsSlice.ts
@@ -1,20 +1,39 @@
 import { createSlice } from '@reduxjs/toolkit';
 import type { PayloadAction } from '@reduxjs/toolkit';
 import { nanoid } from 'nanoid';
-import { objectify } from 'radash';
+import {
+  ProductionKWMv2Keys,
+  ProductionQMCv2Keys,
+  StagingKWMv2Key,
+  StagingQMCv2Key,
+  kwm2ProductionToStaging,
+  kwm2StagingToProductionKey,
+  kwm2StagingToProductionValue,
+  productionKeyToStaging,
+  qmc2ProductionToStaging,
+  qmc2StagingToProductionKey,
+  qmc2StagingToProductionValue,
+  stagingKeyToProduction,
+} from './keyFormats';
 
 export interface StagingSettings {
   qmc2: {
-    keys: { id: string; name: string; key: string }[];
+    keys: StagingQMCv2Key[];
     allowFuzzyNameSearch: boolean;
   };
+  kwm2: {
+    keys: StagingKWMv2Key[];
+  };
 }
 
 export interface ProductionSettings {
   qmc2: {
-    keys: Record<string, string>; // {  [fileName]: ekey  }
+    keys: ProductionQMCv2Keys; // {  [fileName]: ekey  }
     allowFuzzyNameSearch: boolean;
   };
+  kwm2: {
+    keys: ProductionKWMv2Keys; // { [`${rid}-${quality}`]: ekey }
+  };
 }
 
 export interface SettingsState {
@@ -23,35 +42,33 @@ export interface SettingsState {
 }
 const initialState: SettingsState = {
   staging: {
-    qmc2: {
-      allowFuzzyNameSearch: false,
-      keys: [],
-    },
+    qmc2: { allowFuzzyNameSearch: false, keys: [] },
+    kwm2: { keys: [] },
   },
   production: {
-    qmc2: {
-      allowFuzzyNameSearch: false,
-      keys: {},
-    },
+    qmc2: { allowFuzzyNameSearch: false, keys: {} },
+    kwm2: { keys: {} },
   },
 };
 
 const stagingToProduction = (staging: StagingSettings): ProductionSettings => ({
   qmc2: {
-    keys: objectify(
-      staging.qmc2.keys,
-      (item) => item.name.normalize(),
-      (item) => item.key.trim()
-    ),
+    keys: stagingKeyToProduction(staging.qmc2.keys, qmc2StagingToProductionKey, qmc2StagingToProductionValue),
     allowFuzzyNameSearch: staging.qmc2.allowFuzzyNameSearch,
   },
+  kwm2: {
+    keys: stagingKeyToProduction(staging.kwm2.keys, kwm2StagingToProductionKey, kwm2StagingToProductionValue),
+  },
 });
 
 const productionToStaging = (production: ProductionSettings): StagingSettings => ({
   qmc2: {
-    keys: Object.entries(production.qmc2.keys).map(([name, key]) => ({ id: nanoid(), name, key })),
+    keys: productionKeyToStaging(production.qmc2.keys, qmc2ProductionToStaging),
     allowFuzzyNameSearch: production.qmc2.allowFuzzyNameSearch,
   },
+  kwm2: {
+    keys: productionKeyToStaging(production.kwm2.keys, kwm2ProductionToStaging),
+  },
 });
 
 export const settingsSlice = createSlice({
@@ -64,10 +81,11 @@ export const settingsSlice = createSlice({
         staging: productionToStaging(payload),
       };
     },
+    //
     qmc2AddKey(state) {
-      state.staging.qmc2.keys.push({ id: nanoid(), name: '', key: '' });
+      state.staging.qmc2.keys.push({ id: nanoid(), name: '', ekey: '' });
     },
-    qmc2ImportKeys(state, { payload }: PayloadAction<{ name: string; key: string }[]>) {
+    qmc2ImportKeys(state, { payload }: PayloadAction<Omit<StagingQMCv2Key, 'id'>[]>) {
       const newItems = payload.map((item) => ({ id: nanoid(), ...item }));
       state.staging.qmc2.keys.push(...newItems);
     },
@@ -77,7 +95,7 @@ export const settingsSlice = createSlice({
     },
     qmc2UpdateKey(
       state,
-      { payload: { id, field, value } }: PayloadAction<{ id: string; field: 'name' | 'key'; value: string }>
+      { payload: { id, field, value } }: PayloadAction<{ id: string; field: keyof StagingQMCv2Key; value: string }>
     ) {
       const keyItem = state.staging.qmc2.keys.find((item) => item.id === id);
       if (keyItem) {
@@ -90,6 +108,31 @@ export const settingsSlice = createSlice({
     qmc2AllowFuzzyNameSearch(state, { payload: { enable } }: PayloadAction<{ enable: boolean }>) {
       state.staging.qmc2.allowFuzzyNameSearch = enable;
     },
+    // TODO: reuse the logic somehow?
+    kwm2AddKey(state) {
+      state.staging.kwm2.keys.push({ id: nanoid(), ekey: '', quality: '', rid: '' });
+    },
+    kwm2ImportKeys(state, { payload }: PayloadAction<Omit<StagingKWMv2Key, 'id'>[]>) {
+      const newItems = payload.map((item) => ({ id: nanoid(), ...item }));
+      state.staging.kwm2.keys.push(...newItems);
+    },
+    kwm2DeleteKey(state, { payload: { id } }: PayloadAction<{ id: string }>) {
+      const kwm2 = state.staging.kwm2;
+      kwm2.keys = kwm2.keys.filter((item) => item.id !== id);
+    },
+    kwm2UpdateKey(
+      state,
+      { payload: { id, field, value } }: PayloadAction<{ id: string; field: keyof StagingKWMv2Key; value: string }>
+    ) {
+      const keyItem = state.staging.kwm2.keys.find((item) => item.id === id);
+      if (keyItem) {
+        keyItem[field] = value;
+      }
+    },
+    kwm2ClearKeys(state) {
+      state.staging.kwm2.keys = [];
+    },
+    //
     discardStagingChanges: (state) => {
       state.staging = productionToStaging(state.production);
     },
@@ -118,6 +161,12 @@ export const {
   qmc2ImportKeys,
   qmc2AllowFuzzyNameSearch,
 
+  kwm2AddKey,
+  kwm2UpdateKey,
+  kwm2DeleteKey,
+  kwm2ClearKeys,
+  kwm2ImportKeys,
+
   commitStagingChange,
   discardStagingChanges,
 } = settingsSlice.actions;
diff --git a/src/util/DatabaseKeyExtractor.ts b/src/util/DatabaseKeyExtractor.ts
index 7df071f..5158820 100644
--- a/src/util/DatabaseKeyExtractor.ts
+++ b/src/util/DatabaseKeyExtractor.ts
@@ -3,7 +3,7 @@ import { SQLDatabase, SQLStatic, loadSQL } from './sqlite';
 
 export interface QMAndroidKeyEntry {
   name: string;
-  key: string;
+  ekey: string;
 }
 
 export class DatabaseKeyExtractor {
@@ -33,10 +33,10 @@ export class DatabaseKeyExtractor {
       }
 
       const keys = db.exec('select file_path, ekey from `audio_file_ekey_table`')[0].values;
-      return keys.map(([path, key]) => ({
+      return keys.map(([path, ekey]) => ({
         // strip dir name
         name: getFileName(String(path)),
-        key: String(key),
+        ekey: String(ekey),
       }));
     } finally {
       db?.close();
diff --git a/src/util/MMKVParser.ts b/src/util/MMKVParser.ts
index 6a8425d..530f237 100644
--- a/src/util/MMKVParser.ts
+++ b/src/util/MMKVParser.ts
@@ -95,4 +95,8 @@ export class MMKVParser {
     }
     return result;
   }
+
+  public static parseKuwoEKey(_view: DataView): unknown[] {
+    return [];
+  }
 }
diff --git a/src/util/__tests__/splitN.ts.test.ts b/src/util/__tests__/splitN.ts.test.ts
new file mode 100644
index 0000000..448322b
--- /dev/null
+++ b/src/util/__tests__/splitN.ts.test.ts
@@ -0,0 +1,10 @@
+import { splitN } from '../splitN';
+
+test('some test cases', () => {
+  expect(splitN('1,2,3', ',', 2)).toEqual(['1', '2,3']);
+  expect(splitN('1,2,3', ',', 3)).toEqual(['1', '2', '3']);
+  expect(splitN('1,2,3', ',', 4)).toEqual(['1', '2', '3']);
+
+  expect(splitN('1,2,3', '.', 3)).toEqual(['1,2,3']);
+  expect(splitN('1,2,3', '?', 0)).toEqual(['1,2,3']);
+});
diff --git a/src/util/splitN.ts b/src/util/splitN.ts
new file mode 100644
index 0000000..0b3d402
--- /dev/null
+++ b/src/util/splitN.ts
@@ -0,0 +1,20 @@
+export function splitN(str: string, sep: string, maxN: number) {
+  if (maxN <= 1) {
+    return [str];
+  }
+
+  const chunks: string[] = [];
+  const lenSep = sep.length;
+  let searchIdx = 0;
+  for (; maxN > 1; maxN--) {
+    const nextIdx = str.indexOf(sep, searchIdx);
+    if (nextIdx === -1) {
+      break;
+    }
+    chunks.push(str.slice(searchIdx, nextIdx));
+    searchIdx = nextIdx + lenSep;
+  }
+
+  chunks.push(str.slice(searchIdx));
+  return chunks;
+}