modify

Runtime/AlicizaX.Entry.Runtime.asmdef

@@ -22,6 +22,12 @@
     "precompiledReferences": [],
     "autoReferenced": true,
     "defineConstraints": [],
-    "versionDefines": [],
+    "versionDefines": [
+        {
+            "name": "com.alicizax.unity.network",
+            "expression": "",
+            "define": "ALICIZAX_NETWORK"
+        }
+    ],
     "noEngineReferences": false
 }

Runtime/GameApp.Network.cs

@@ -1,4 +1,4 @@
-
+#if ALICIZAX_NETWORK
 using AlicizaX.Network.Runtime;
 using AlicizaX;
 
@@ -22,3 +22,5 @@ public static partial class GameApp
 
     internal static INetworkModule _network;
 }
+
+#endif