diff --git a/patches/removed/server/1.21/0018-Akarin-Save-Json-list-asynchronously.patch b/patches/removed/server/1.21/0018-Akarin-Save-Json-list-asynchronously.patch
new file mode 100644
index 00000000..7bff6533
--- /dev/null
+++ b/patches/removed/server/1.21/0018-Akarin-Save-Json-list-asynchronously.patch
@@ -0,0 +1,90 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=E3=84=97=E3=84=A0=CB=8B=20=E3=84=91=E3=84=A7=CB=8A?=
+ <tsao-chi@the-lingo.org>
+Date: Thu, 5 Jan 2023 09:08:17 +0800
+Subject: [PATCH] Akarin: Save Json list asynchronously
+
+Original license: GPL v3
+Original project: https://github.com/Akarin-project/Akarin
+Original project: https://github.com/Winds-Studio/Leaf
+
+diff --git a/src/main/java/net/minecraft/server/players/StoredUserList.java b/src/main/java/net/minecraft/server/players/StoredUserList.java
+index 7e133752ccb1ea7c0b4fa781feb1a88e2cfdcf6d..c06a0e8fe3f9a8f67e6a92e10ba9d8e47525bbfb 100644
+--- a/src/main/java/net/minecraft/server/players/StoredUserList.java
++++ b/src/main/java/net/minecraft/server/players/StoredUserList.java
+@@ -22,6 +22,7 @@ import java.util.Objects;
+ import java.util.stream.Stream;
+ import javax.annotation.Nullable;
+ import net.minecraft.Util;
++import io.papermc.paper.util.MCUtil;
+ import net.minecraft.util.GsonHelper;
+ import org.slf4j.Logger;
+ 
+@@ -103,37 +104,43 @@ public abstract class StoredUserList<K, V extends StoredUserEntry<K>> {
+     }
+ 
+     public void save() throws IOException {
+-        this.removeExpired(); // Paper - remove expired values before saving
+-        JsonArray jsonarray = new JsonArray();
+-        Stream<JsonObject> stream = this.map.values().stream().map((jsonlistentry) -> { // CraftBukkit - decompile error
+-            JsonObject jsonobject = new JsonObject();
++        Runnable saveTask = ()->{ // Akarin - Save json list async
++            this.removeExpired(); // Paper - remove expired values before saving
++            JsonArray jsonarray = new JsonArray();
++            Stream<JsonObject> stream = this.map.values().stream().map((jsonlistentry) -> { // CraftBukkit - decompile error
++                JsonObject jsonobject = new JsonObject();
+ 
+-            Objects.requireNonNull(jsonlistentry);
+-            return (JsonObject) Util.make(jsonobject, jsonlistentry::serialize);
+-        });
++                Objects.requireNonNull(jsonlistentry);
++                return (JsonObject) Util.make(jsonobject, jsonlistentry::serialize);
++            });
+ 
+-        Objects.requireNonNull(jsonarray);
+-        stream.forEach(jsonarray::add);
+-        BufferedWriter bufferedwriter = Files.newWriter(this.file, StandardCharsets.UTF_8);
++            Objects.requireNonNull(jsonarray);
++            stream.forEach(jsonarray::add);
++            try {
++                BufferedWriter bufferedwriter = Files.newWriter(this.file, StandardCharsets.UTF_8);
+ 
+-        try {
+-            StoredUserList.GSON.toJson(jsonarray, bufferedwriter);
+-        } catch (Throwable throwable) {
+-            if (bufferedwriter != null) {
+                 try {
++                    StoredUserList.GSON.toJson(jsonarray, bufferedwriter);
++                } catch (Throwable throwable) {
++                    if (bufferedwriter != null) {
++                        try {
++                            bufferedwriter.close();
++                        } catch (Throwable throwable1) {
++                            throwable.addSuppressed(throwable1);
++                        }
++                    }
++
++                    throw throwable;
++                }
++
++                if (bufferedwriter != null) {
+                     bufferedwriter.close();
+-                } catch (Throwable throwable1) {
+-                    throwable.addSuppressed(throwable1);
+                 }
++            }catch (Exception e){
++                StoredUserList.LOGGER.warn("Failed to async save " + this.file, e); // Akarin - Save json list async
+             }
+-
+-            throw throwable;
+-        }
+-
+-        if (bufferedwriter != null) {
+-            bufferedwriter.close();
+-        }
+-
++        };
++        MCUtil.scheduleAsyncTask(saveTask); // Akarin - Save json list async
+     }
+ 
+     public void load() throws IOException {