diff --git a/src/db/Avatar.ts b/src/db/Avatar.ts
index 363ebe0..d68a772 100644
--- a/src/db/Avatar.ts
+++ b/src/db/Avatar.ts
@@ -144,6 +144,11 @@ export default class Avatar {
         return res;
     }
 
+    public async save() {
+        const db = Database.getInstance();
+        await db.update("avatars", { ownerUid: this.player.uid, baseAvatarId: this.db.baseAvatarId }, this.db);
+    }
+
     /********************************************************************************
         Get avatar info.
     ********************************************************************************/
diff --git a/src/server/packets/DoGachaCsReq.ts b/src/server/packets/DoGachaCsReq.ts
index 2798719..eb0dbb0 100644
--- a/src/server/packets/DoGachaCsReq.ts
+++ b/src/server/packets/DoGachaCsReq.ts
@@ -16,7 +16,7 @@ export default async function handle(session: Session, packet: Packet) {
 
     if (!success) {
         session.send(DoGachaScRsp, {
-            retcode: 1
+            retcode: 1301
         } as DoGachaScRsp);
     }
 
diff --git a/src/server/packets/RankUpAvatarCsReq.ts b/src/server/packets/RankUpAvatarCsReq.ts
new file mode 100644
index 0000000..0aac5f6
--- /dev/null
+++ b/src/server/packets/RankUpAvatarCsReq.ts
@@ -0,0 +1,39 @@
+import { RankUpAvatarCsReq, RankUpAvatarScRsp } from "../../data/proto/StarRail";
+import Avatar from "../../db/Avatar";
+import Logger from "../../util/Logger";
+import Packet from "../kcp/Packet";
+import Session from "../kcp/Session";
+const c = new Logger("RankUpAvatarCsReq");
+
+export default async function handle(session: Session, packet: Packet) {
+    const body = packet.body as RankUpAvatarCsReq;
+
+    let retcode = 0;
+    if (body.costData) {
+        const inv = await session.player.getInventory();
+
+        for (const item of body.costData.itemList) {
+            if (!item.pileItem) return;
+
+            const succ = await inv.payItems([{
+                count: item.pileItem.itemNum,
+                id: item.pileItem.itemId,
+            }]);
+
+            if (!succ) {
+                retcode = 1301;
+                c.debug(`failed to pay item ${item.pileItem.itemId}`, item.pileItem);
+                break;
+            }
+        }
+    }
+
+    if (retcode === 0) {
+        const avatar = await Avatar.loadAvatarForPlayer(session.player, body.baseAvatarId);
+        avatar.db.rank = body.rank // gidra moment: ez hack
+        await avatar.save();
+    }
+
+    session.send(RankUpAvatarScRsp, { retcode });
+    session.sync();
+}
\ No newline at end of file