diff --git a/gradle.properties b/gradle.properties
index 67c4c6b..2e5218c 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 ## Core
 
-VERSION = 0.4.2.0
+VERSION = 0.4.2.1
 
 # dependencies
 
diff --git a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
index 04559c8..cff1c8f 100644
--- a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
+++ b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
@@ -4,6 +4,6 @@ package cc.sukazyo.cono.morny;
  * the final field that will be updated by gradle automatically.
  */
 public class GradleProjectConfigures {
-	public static final String VERSION = "0.4.2.0";
-	public static final long COMPILE_TIMESTAMP = 1639492714364L;
+	public static final String VERSION = "0.4.2.1";
+	public static final long COMPILE_TIMESTAMP = 1639494688933L;
 }
diff --git a/src/main/java/cc/sukazyo/cono/morny/MornyTrusted.java b/src/main/java/cc/sukazyo/cono/morny/MornyTrusted.java
index 6fa7883..c2a07de 100644
--- a/src/main/java/cc/sukazyo/cono/morny/MornyTrusted.java
+++ b/src/main/java/cc/sukazyo/cono/morny/MornyTrusted.java
@@ -14,6 +14,12 @@ public class MornyTrusted {
 	 */
 	public static final long TRUSTED_CHAT_ID = -1001541451710L;
 	
+	/**
+	 * morny 的主人<br>
+	 * 这项值的对象总是会被认为是可信任的
+	 */
+	public static final long MASTER = 793274677L;
+	
 	/**
 	 * 用于检查一个 telegram-user 是否受信任<br>
 	 * <br>
@@ -25,6 +31,7 @@ public class MornyTrusted {
 	 * @return 所传递的用户id对应的用户是否受信任
 	 */
 	public static boolean isTrusted (long userId) {
+		if (userId == MASTER) return true;
 		final ChatMember chatMember = MornyCoeur.getAccount().execute(new GetChatMember(TRUSTED_CHAT_ID, userId)).chatMember();
 		return (
 				chatMember != null && (
diff --git a/src/main/java/cc/sukazyo/cono/morny/bot/event/EventListeners.java b/src/main/java/cc/sukazyo/cono/morny/bot/event/EventListeners.java
index a08e3fe..47e4699 100644
--- a/src/main/java/cc/sukazyo/cono/morny/bot/event/EventListeners.java
+++ b/src/main/java/cc/sukazyo/cono/morny/bot/event/EventListeners.java
@@ -9,6 +9,7 @@ public class EventListeners {
 	public static final OnUserSlashAction USER_SLASH_ACTION = new OnUserSlashAction();
 	public static final OnUpdateTimestampOffsetLock UPDATE_TIMESTAMP_OFFSET_LOCK = new OnUpdateTimestampOffsetLock();
 	public static final OnInlineQuery INLINE_QUERY = new OnInlineQuery();
+	public static final OnCallMe CALL_ME = new OnCallMe();
 	
 	public static void registerAllListeners () {
 		EventListenerManager.addListener(
@@ -16,7 +17,8 @@ public class EventListeners {
 				UPDATE_TIMESTAMP_OFFSET_LOCK,
 				COMMANDS_LISTENER,
 				USER_SLASH_ACTION,
-				INLINE_QUERY
+				INLINE_QUERY,
+				CALL_ME
 		);
 	}
 	
diff --git a/src/main/java/cc/sukazyo/cono/morny/bot/event/OnCallMe.java b/src/main/java/cc/sukazyo/cono/morny/bot/event/OnCallMe.java
new file mode 100644
index 0000000..db1f20f
--- /dev/null
+++ b/src/main/java/cc/sukazyo/cono/morny/bot/event/OnCallMe.java
@@ -0,0 +1,74 @@
+package cc.sukazyo.cono.morny.bot.event;
+
+import cc.sukazyo.cono.morny.MornyCoeur;
+import cc.sukazyo.cono.morny.MornyTrusted;
+import cc.sukazyo.cono.morny.bot.api.EventListener;
+import cc.sukazyo.cono.morny.data.TelegramStickers;
+import com.pengrad.telegrambot.model.Chat;
+import com.pengrad.telegrambot.model.Update;
+import com.pengrad.telegrambot.model.request.ParseMode;
+import com.pengrad.telegrambot.request.SendMessage;
+import com.pengrad.telegrambot.request.SendSticker;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @since 0.4.2.1
+ */
+public class OnCallMe extends EventListener {
+	
+	/**
+	 * @since 0.4.2.1
+	 */
+	private static final long ME = MornyTrusted.MASTER;
+	
+	@Override
+	public boolean onMessage (@NotNull Update update) {
+		if (update.message().text() == null)
+			return false;
+		if (update.message().chat().type() != Chat.Type.Private)
+			return false;
+		switch (update.message().text().toLowerCase()) {
+			case "steam":
+			case "sbeam":
+			case "sdeam":
+				requestSteamJoin(update);
+				break;
+			case "hana paresu":
+			case "花宫":
+			case "内群":
+				requestHanaParesuJoin(update);
+				break;
+			default:
+				return false;
+		}
+		MornyCoeur.getAccount().execute(new SendSticker(
+						update.message().chat().id(),
+						TelegramStickers.ID_SENT
+				).replyToMessageId(update.message().messageId())
+		);
+		return true;
+	}
+	
+	private static void requestSteamJoin (Update event) {
+		MornyCoeur.getAccount().execute(new SendMessage(
+				ME, String.format("""
+						request <b>STEAM LIBRARY</b>
+						from <a href="tg://user?id=%d">%s</a>""",
+						event.message().from().id(),
+						event.message().from().firstName() + " " + event.message().from().lastName()
+				)
+		).parseMode(ParseMode.HTML));
+	}
+	
+	private static void requestHanaParesuJoin (Update event) {
+		MornyCoeur.getAccount().execute(new SendMessage(
+				ME, String.format("""
+						request <b>Hana Paresu</b>
+						from <a href="tg://user?id=%d">%s</a>""",
+						event.message().from().id(),
+						event.message().from().firstName() + " " + event.message().from().lastName()
+				)
+		).parseMode(ParseMode.HTML));
+	}
+	
+}
diff --git a/src/main/java/cc/sukazyo/cono/morny/data/TelegramStickers.java b/src/main/java/cc/sukazyo/cono/morny/data/TelegramStickers.java
index d4715e1..d478e05 100644
--- a/src/main/java/cc/sukazyo/cono/morny/data/TelegramStickers.java
+++ b/src/main/java/cc/sukazyo/cono/morny/data/TelegramStickers.java
@@ -12,5 +12,6 @@ public class TelegramStickers {
 	public static final String ID_403 = "CAACAgEAAxkBAAMqYYYa_7hpXH6hMOYMX4Nh8AVYd74AAnQnAAJ4_MYFRdmmsQKLDZgiBA";
 	public static final String ID_404 = "CAACAgEAAx0CSQh32gABA966YbRJpbmi2lCHINBDuo1DknSTsbsAAqUoAAJ4_MYFUa8SIaZriAojBA";
 	public static final String ID_WAITING = "CAACAgEAAx0CSQh32gABA-8DYbh7W2VhJ490ucfZMUMrgMR2FW4AAm4nAAJ4_MYFjx6zpxJPWsQjBA";
+	public static final String ID_SENT = "CAACAgEAAx0CSQh32gABA--zYbiyU_wOijEitp-0tSl_k7W6l3gAAgMmAAJ4_MYF4GrompjXPx4jBA";
 	
 }