diff --git a/src/Arts.cs b/src/Arts.cs
index c5a9422..77b4a42 100644
--- a/src/Arts.cs
+++ b/src/Arts.cs
@@ -106,6 +106,18 @@ static class Arts
         Enemy enemy_test = Mono.enemy_types[(int)(Time.Totalf % Mono.enemy_types.Length)];
         enemy_test.pose.position = V.XYZ(SKMath.Sin(Time.Totalf * 1f) * 1.0f, 0.666f, -3.0f);
         enemy_test.pose.orientation = Quat.FromAngles(0, Time.Totalf * 30, 0);
+        for (int i = 0; i < enemy_test.cols.Count; i++)
+        {
+            Sphere col = enemy_test.cols[i];
+            Mesh.Sphere.Draw(
+                mat_mono,
+                Matrix.TS(
+                    col.center,
+                    col.radius * 2.0f
+                ) * enemy_test.pose.ToMatrix(),
+                Color.Hex(0x13180AFF).ToLinear()
+            );
+        }
 
         // eyes
         // Mesh.Cube.Draw(