diff --git a/Iceshrimp.Backend/Core/Configuration/Constants.cs b/Iceshrimp.Backend/Core/Configuration/Constants.cs
index ffe53b1f..3cbe6d15 100644
--- a/Iceshrimp.Backend/Core/Configuration/Constants.cs
+++ b/Iceshrimp.Backend/Core/Configuration/Constants.cs
@@ -8,6 +8,7 @@ public static class Constants
 	public const           string   XsdNs             = "http://www.w3.org/2001/XMLSchema";
 	public const           string   SchemaNs          = "http://schema.org";
 	public const           string   MastodonNs        = "http://joinmastodon.org/ns";
+	public const           string   MisskeyNs         = "https://misskey-hub.net/ns";
 	public static readonly string[] SystemUsers       = ["instance.actor", "relay.actor"];
 
 	public static readonly string[] BrowserSafeMimeTypes =
diff --git a/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityHandlerService.cs b/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityHandlerService.cs
index d5743eae..bb799d15 100644
--- a/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityHandlerService.cs
+++ b/Iceshrimp.Backend/Core/Federation/ActivityPub/ActivityHandlerService.cs
@@ -144,11 +144,13 @@ public class ActivityHandlerService(
 					case ASFollow { Object: ASActor followee }:
 						await UnfollowAsync(followee, resolvedActor);
 						return;
-					case ASLike { Object: ASNote likedNote }:
-						await noteSvc.UnlikeNoteAsync(likedNote, resolvedActor);
+					case ASLike { Object: ASNote note } like:
+						var dbNote = await noteSvc.UnlikeNoteAsync(note, resolvedActor);
+						if (like.MisskeyReaction != null)
+							await noteSvc.RemoveReactionFromNoteAsync(dbNote, resolvedActor, like.MisskeyReaction);
 						return;
-					case ASAnnounce { Object: ASNote likedNote }:
-						await noteSvc.UndoAnnounceAsync(likedNote, resolvedActor);
+					case ASAnnounce { Object: ASNote note }:
+						await noteSvc.UndoAnnounceAsync(note, resolvedActor);
 						return;
 					case ASEmojiReact { Object: ASNote note } react:
 						await noteSvc.RemoveReactionFromNoteAsync(note, resolvedActor, react.Content);
@@ -157,11 +159,18 @@ public class ActivityHandlerService(
 						throw GracefulException.UnprocessableEntity("Undo activity object is invalid");
 				}
 			}
-			case ASLike:
+			case ASLike like:
 			{
 				if (activity.Object is not ASNote note)
 					throw GracefulException.UnprocessableEntity("Like activity object is invalid");
-				await noteSvc.LikeNoteAsync(note, resolvedActor);
+				var dbNote = await noteSvc.LikeNoteAsync(note, resolvedActor);
+
+				if (like.MisskeyReaction != null)
+				{
+					await emojiSvc.ProcessEmojiAsync(like.Tags?.OfType<ASEmoji>().ToList(), resolvedActor.Host);
+					await noteSvc.ReactToNoteAsync(dbNote, resolvedActor, like.MisskeyReaction);
+				}
+
 				return;
 			}
 			case ASUpdate:
diff --git a/Iceshrimp.Backend/Core/Federation/ActivityStreams/Types/ASActivity.cs b/Iceshrimp.Backend/Core/Federation/ActivityStreams/Types/ASActivity.cs
index 9db08183..7656cbad 100644
--- a/Iceshrimp.Backend/Core/Federation/ActivityStreams/Types/ASActivity.cs
+++ b/Iceshrimp.Backend/Core/Federation/ActivityStreams/Types/ASActivity.cs
@@ -119,6 +119,14 @@ public class ASUndo : ASActivity
 public class ASLike : ASActivity
 {
 	public ASLike() => Type = Types.Like;
+	
+	[J($"{Constants.MisskeyNs}#_misskey_reaction")]
+	[JC(typeof(VC))]
+	public string? MisskeyReaction { get; set; }
+	
+	[J($"{Constants.ActivityStreamsNs}#tag")]
+	[JC(typeof(ASTagConverter))]
+	public List<ASTag>? Tags { get; set; }
 }
 
 public class ASUpdate : ASActivity
diff --git a/Iceshrimp.Backend/Core/Services/NoteService.cs b/Iceshrimp.Backend/Core/Services/NoteService.cs
index 9e8956ae..5b116ac3 100644
--- a/Iceshrimp.Backend/Core/Services/NoteService.cs
+++ b/Iceshrimp.Backend/Core/Services/NoteService.cs
@@ -1041,16 +1041,18 @@ public class NoteService(
 		return true;
 	}
 
-	public async Task LikeNoteAsync(ASNote note, User actor)
+	public async Task<Note> LikeNoteAsync(ASNote note, User actor)
 	{
 		var dbNote = await ResolveNoteAsync(note) ?? throw new Exception("Cannot register like for unknown note");
 		await LikeNoteAsync(dbNote, actor);
+		return dbNote;
 	}
 
-	public async Task UnlikeNoteAsync(ASNote note, User user)
+	public async Task<Note> UnlikeNoteAsync(ASNote note, User user)
 	{
 		var dbNote = await ResolveNoteAsync(note) ?? throw new Exception("Cannot unregister like for unknown note");
 		await UnlikeNoteAsync(dbNote, user);
+		return dbNote;
 	}
 
 	public async Task BookmarkNoteAsync(Note note, User user)