diff --git a/app/Main.hs b/app/Main.hs
index 1408ed1..36fe8de 100644
--- a/app/Main.hs
+++ b/app/Main.hs
@@ -1,19 +1,14 @@
 {-# LANGUAGE QuasiQuotes #-}
 {-# LANGUAGE DataKinds #-}
-{-# LANGUAGE DerivingStrategies #-}
 {-# LANGUAGE DerivingVia #-}
 {-# LANGUAGE StandaloneDeriving #-}
 {-# LANGUAGE DeriveGeneric #-}
 module Main where
 
-import Data.Text (Text(..))
+import Data.Text (Text)
 import Data.Aeson
-import qualified MyLib (someFunc)
 import Database.SQLite.Simple
-import Database.SQLite.Simple.FromRow (FromRow)
-import Database.SQLite.Simple.FromField (fromField)
 import Database.SQLite.Simple.QQ
-import Network.Wai
 import Network.Wai.Handler.Warp
 import Deriving.Aeson
 import Data.Proxy
@@ -23,7 +18,10 @@ import Control.Monad.IO.Class
 
 data Quote = Quote { qQuote :: Text
                    , qAuthor :: Text
-                   , qBook :: Text
+                   , qTitle :: Text
+                   -- , qPage :: Text
+                   -- , qChapter :: Text
+                   -- , qTime :: UnixTime
                    } deriving (Show, Eq, Ord, Generic)
                      deriving (FromJSON,ToJSON)
                        via CustomJSON '[OmitNothingFields, FieldLabelModifier '[StripPrefix "q", CamelToSnake]] Quote
diff --git a/lib/KOReader.hs b/lib/KOReader.hs
new file mode 100644
index 0000000..093b058
--- /dev/null
+++ b/lib/KOReader.hs
@@ -0,0 +1,51 @@
+-- | Module to parse KOReader hightlight file
+{-# LANGUAGE DerivingVia #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE DeriveGeneric #-}
+{-# LANGUAGE OverloadedStrings #-}
+module KOReader where
+
+import Deriving.Aeson
+import Data.Aeson
+import Data.Text
+
+showT :: Show a => a -> Text
+showT = pack . show
+
+newtype KoPage = KoPage Text
+  deriving (Show, Eq, Generic)
+
+instance FromJSON KoPage where
+  parseJSON (Number s) = pure (KoPage $ showT $ round s)
+  parseJSON (String s) = pure (KoPage (showT s))
+  parseJSON _ = undefined
+
+instance ToJSON KoPage where
+  toJSON (KoPage a) = toJSON a
+
+data KoHighlight = KoHighlight { khlDocuments :: [KoDocument]
+                               , khlVersion :: Text
+                               -- TODO: UNIX time
+                               , khlCreatedOn :: Integer }
+                  deriving (Show, Eq, Generic)
+                  deriving (FromJSON, ToJSON)
+                    via CustomJSON '[OmitNothingFields, FieldLabelModifier '[StripPrefix "khl", CamelToSnake]] KoHighlight
+
+data KoDocument = KoDocument { kodTitle :: Text
+                             , kodAuthor :: Maybe Text
+                             , kodFile :: Maybe Text
+                             , kodEntries :: [KoEntry] }
+                  deriving (Show, Eq, Generic)
+                  deriving (FromJSON, ToJSON)
+                    via CustomJSON '[OmitNothingFields, FieldLabelModifier '[StripPrefix "kod", CamelToSnake]] KoDocument
+
+data KoEntry = KoEntry { koeChapter :: Maybe Text
+                       , koePage :: KoPage
+                       -- TODO: unix time
+                       , koeTime :: Maybe Integer
+                       , koeSort :: Maybe Text
+                       , koeDrawer :: Maybe Text
+                       , koeText :: Text}
+                  deriving (Show, Eq, Generic)
+                  deriving (FromJSON, ToJSON)
+                    via CustomJSON '[OmitNothingFields, FieldLabelModifier '[StripPrefix "koe", CamelToSnake]] KoEntry
diff --git a/quotes-api.cabal b/quotes-api.cabal
index 688a03b..afbe51c 100644
--- a/quotes-api.cabal
+++ b/quotes-api.cabal
@@ -59,7 +59,7 @@ library
     import:           warnings
 
     -- Modules exported by the library.
-    exposed-modules:  MyLib
+    exposed-modules:  KOReader
 
     -- Modules included in this library but not exported.
     -- other-modules:
@@ -68,7 +68,12 @@ library
     -- other-extensions:
 
     -- Other library packages from which modules are imported.
-    build-depends:    base ^>=4.16.3.0
+    build-depends:    base ^>=4.16.3.0,
+                      text,
+                      aeson,
+                      deriving-aeson,
+                      bytestring,
+                      unordered-containers,
     -- Directories containing source files.
     hs-source-dirs:   lib