diff --git a/Cargo.toml b/Cargo.toml
index 0cc016c..8188989 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -59,6 +59,7 @@ duct = "0.13.6"
 runas = "1.1.0"
 csv-async = { version = "1.2.6", features = ["tokio"] }
 futures = "0.3.28"
+twitch-irc = "5.0.1"
 
 # Windows Only
 [target.'cfg(windows)'.dependencies]
diff --git a/dictionary.arknights.txt b/dictionary.arknights.txt
index 7ef530e..e9936f2 100644
--- a/dictionary.arknights.txt
+++ b/dictionary.arknights.txt
@@ -53,7 +53,6 @@
 げんがんこう	源岩鉱	名詞
 けんじょうほうしゅ	堅城砲手	名詞
 げんせき	源石	名詞
-こう	功	名詞	将進酒
 こうご	句呉	地名
 こうごじょう	句呉城	名詞	将進酒
 こうせきびょう	鉱石病	名詞
diff --git a/dictionary.chat.txt b/dictionary.chat.txt
new file mode 100644
index 0000000..f57bc9e
--- /dev/null
+++ b/dictionary.chat.txt
@@ -0,0 +1 @@
+うさぎはかせちゃん UsagiNetwork
diff --git a/src/conf/mod.rs b/src/conf/mod.rs
index 05200dc..feb452b 100644
--- a/src/conf/mod.rs
+++ b/src/conf/mod.rs
@@ -23,6 +23,12 @@ pub enum RunWith {
  },
 }
 
+#[derive(Debug, Deserialize, Serialize, Clone)]
+pub struct Twitch {
+ pub username: String,
+ pub channel_to: String,
+}
+
 #[derive(Debug, Deserialize, Serialize, Clone)]
 pub struct Conf {
  pub workers: Option<usize>,
@@ -37,6 +43,8 @@ pub struct Conf {
  pub state_data_capacity: Option<usize>,
  pub state_data_pretty: Option<bool>,
 
+ pub twitch: Option<Twitch>,
+
  #[serde(default)]
  pub run_with: Vec<RunWith>,
 
diff --git a/src/error.rs b/src/error.rs
index f2ade21..d54fa84 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -34,6 +34,9 @@ pub enum Error {
 
  #[error("OS-TTS エラーが発生しました: {0}")]
  OsTtsError(#[from] tts::Error),
+
+ #[error("スレッド終了エラーが発生しました: {0}")]
+ JoinError(#[from] tokio::task::JoinError),
 }
 
 impl ResponseError for Error {
@@ -50,6 +53,7 @@ impl ResponseError for Error {
    Self::SystemTimeError(_) => StatusCode::INTERNAL_SERVER_ERROR,
    Self::RegexError(_) => StatusCode::INTERNAL_SERVER_ERROR,
    Self::OsTtsError(_) => StatusCode::INTERNAL_SERVER_ERROR,
+   Self::JoinError(_) => StatusCode::INTERNAL_SERVER_ERROR,
   }
  }
 
diff --git a/src/lib.rs b/src/lib.rs
index fcfa8dc..5b1bc69 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -57,9 +57,46 @@ pub async fn run() -> Result<()> {
  // 共有ステートを作成
  let state = State::new(&conf, audio_sink).await?;
 
+ // TODO: コード整理
+ use twitch_irc::login::StaticLoginCredentials;
+ use twitch_irc::TwitchIRCClient;
+ use twitch_irc::{ClientConfig, SecureTCPTransport};
+
+ let config = ClientConfig::default();
+ let (mut incoming_messages, client) = TwitchIRCClient::<SecureTCPTransport, StaticLoginCredentials>::new(config);
+
+ let state_for_message_handler = state.clone();
+ let twitch = conf.twitch.clone();
+ let join_handle = tokio::spawn(async move {
+  if twitch.is_none() {
+   return;
+  }
+  let ch = twitch.unwrap().channel_to;
+  while let Some(message) = incoming_messages.recv().await {
+   match message {
+    twitch_irc::message::ServerMessage::Privmsg(msg) => {
+     log::debug!("Received message: {:?}", msg);
+     let m = format!("{}:{}", msg.sender.name, msg.message_text);
+     state_for_message_handler
+      .read()
+      .await
+      .push_channel_datum(ChannelDatum::new(ch.clone(), m).with_flag(ChannelDatum::FLAG_IS_FINAL))
+      .await;
+    },
+    _ => (),
+   }
+  }
+ });
+
+ if let Some(twitch) = conf.twitch.clone() {
+  client.join(twitch.username).unwrap();
+ }
+
  // 通常の動作モードで実行
  run_services(conf, state).await?;
 
+ join_handle.await?;
+
  Ok(())
 }