new detailed mizu description

src/pages/projects/mizu.astro

@@ -21,7 +21,15 @@ export const metadata = {
 ---
 
 <ProjectPage metadata={metadata}>
-    <p>simple description here</p>
+    <p>
+        I led a four-person team to create MIZU, a popular anime trading card
+        game on Discord. In this role, I was responsible for the full lifecycle
+        of the application: designing the core architecture, building the
+        application with Node.js and TypeScript, and deploying it on a
+        self-managed VPS. We successfully scaled to serve over 4,000 players.
+        Although MIZU is no longer active, it was a significant experience in
+        leading a team and scaling a live application.
+    </p>
 
     <p>images here</p>