diff --git a/gradle.properties b/gradle.properties
index d270904..5c9ffe4 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 ## Core
 
-VERSION = 0.6.3.1
+VERSION = 0.6.3.2
 
 # dependencies
 
diff --git a/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java b/src/main/java/cc/sukazyo/cono/morny/GradleProjectConfigures.java
index cfd598d..d08ca5a 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 = "0.6.3.0";
-	public static final long COMPILE_TIMESTAMP = 1651804975121L;
+	public static final String VERSION = "0.6.3.2";
+	public static final long COMPILE_TIMESTAMP = 1651806802187L;
 }
diff --git a/src/main/java/cc/sukazyo/cono/morny/bot/event/OnUserSlashAction.java b/src/main/java/cc/sukazyo/cono/morny/bot/event/OnUserSlashAction.java
index bfb5da3..b624a23 100644
--- a/src/main/java/cc/sukazyo/cono/morny/bot/event/OnUserSlashAction.java
+++ b/src/main/java/cc/sukazyo/cono/morny/bot/event/OnUserSlashAction.java
@@ -2,12 +2,13 @@ package cc.sukazyo.cono.morny.bot.event;
 
 import cc.sukazyo.cono.morny.MornyCoeur;
 import cc.sukazyo.cono.morny.bot.api.EventListener;
+import cc.sukazyo.cono.morny.util.tgapi.TGToStringFromMessage;
 import cc.sukazyo.untitled.telegram.api.formatting.TGToString;
 import cc.sukazyo.untitled.util.command.CommonCommand;
 import cc.sukazyo.untitled.util.string.StringArrays;
 
+import com.pengrad.telegrambot.model.Message;
 import com.pengrad.telegrambot.model.Update;
-import com.pengrad.telegrambot.model.User;
 import com.pengrad.telegrambot.model.request.ParseMode;
 import com.pengrad.telegrambot.request.SendMessage;
 
@@ -55,22 +56,22 @@ public class OnUserSlashAction extends EventListener {
 					hasObject ?
 					StringArrays.connectStringArray(action, " ", isHardParse?2:1, action.length-1) :
 					"";
-			final User origin = event.message().from();
-			final User target = (event.message().replyToMessage() == null ? (
+			final Message origin = event.message();
+			final Message target = (event.message().replyToMessage() == null ? (
 					origin
 			): (
-					event.message().replyToMessage().from()
+					event.message().replyToMessage()
 			));
 			
 			MornyCoeur.extra().exec(new SendMessage(
 					event.message().chat().id(),
 					String.format(
 							"%s %s%s %s %s!",
-							TGToString.as(origin).firstnameRefHtml(),
+							TGToStringFromMessage.as(origin).getSenderFirstNameRefHtml(),
 							escapeHtml(verb), escapeHtml((hasObject?"":"了")),
 							origin==target ?
-									"<a href='tg://user?id="+target.id()+"'>自己</a>" :
-									TGToString.as(target).firstnameRefHtml(),
+									"<a href='tg://user?id="+TGToStringFromMessage.as(target).getSenderId()+"'>自己</a>" :
+							TGToStringFromMessage.as(target).getSenderFirstNameRefHtml(),
 							escapeHtml(hasObject ? object+" " : "")
 					)
 			).parseMode(ParseMode.HTML).replyToMessageId(event.message().messageId()));
diff --git a/src/main/java/cc/sukazyo/cono/morny/util/tgapi/TGToStringFromMessage.java b/src/main/java/cc/sukazyo/cono/morny/util/tgapi/TGToStringFromMessage.java
new file mode 100644
index 0000000..e4fac35
--- /dev/null
+++ b/src/main/java/cc/sukazyo/cono/morny/util/tgapi/TGToStringFromMessage.java
@@ -0,0 +1,30 @@
+package cc.sukazyo.cono.morny.util.tgapi;
+
+import cc.sukazyo.untitled.telegram.api.formatting.TGToString;
+import cc.sukazyo.untitled.util.telegram.formatting.MsgEscape;
+import com.pengrad.telegrambot.model.Message;
+
+import javax.annotation.Nonnull;
+
+public class TGToStringFromMessage extends TGToString {
+	
+	@Nonnull
+	private final Message message;
+	
+	public TGToStringFromMessage (@Nonnull Message message) { this.message = message; }
+	public static TGToStringFromMessage as (@Nonnull Message message) { return new TGToStringFromMessage(message); }
+	
+	@Nonnull
+	public String getSenderFirstNameRefHtml () {
+		return message.senderChat()==null ? TGToString.as(message.from()).firstnameRefHtml() : String.format(
+				"<a href='tg://user?id=%d'>%s</a>",
+				message.senderChat().id(),
+				MsgEscape.escapeHtml(message.senderChat().title())
+		);
+	}
+	
+	public long getSenderId () {
+		return message.senderChat()==null ? message.from().id() : message.senderChat().id();
+	}
+	
+}