diff --git a/sk_demo/src/Mono.cs b/sk_demo/src/Mono.cs
index 079779b..ddd01e9 100644
--- a/sk_demo/src/Mono.cs
+++ b/sk_demo/src/Mono.cs
@@ -19,15 +19,6 @@ public class Mono {
   Model model_room = Model.FromFile("room.glb");
   Mesh mesh_room = Mesh.Quad;
 
-  public class Character {
-    public string character;
-    public int[] dots;
-    public Character(string character, int[] dots) {
-      this.character = character;
-      this.dots = dots;
-    }
-  }
-
   // key:(char) value:(int[] dots)
   Dictionary<char, int[]> char_cell = new Dictionary<char, int[]> {
     { ' ', new int[] {
@@ -247,9 +238,12 @@ public class Mono {
     //   // Log.Info("thumb is out");
     //   xi = 0;
     // }
-    if (Input.Key(Key.Down).IsJustActive()) {
-      monoNet.value = ' ';
-      monoNet.send = true;
+    for (int i = 0; i < keb_keys.Length-1; i++) {
+      if (Input.Key(keb_keys[i].key).IsJustActive()) {
+        txt += keb_keys[i].char_;
+        monoNet.value = keb_keys[i].char_;
+        monoNet.send = true;
+      }
     }
 
     Vec3 index_tip = keyboard_m4.Inverse * rig.hand_1.Get(FingerId.Index, JointId.Tip).position;
@@ -294,7 +288,6 @@ public class Mono {
         );
 
         int index = y * 10 + x;
-        // string text = characters[index].character;
         char keychar = KeyToChar(index);
 
         Text.Add(
@@ -374,4 +367,38 @@ public class Mono {
 
     mat.Run();
   }
+
+  KebKey[] keb_keys = new KebKey[] {
+    new() { key = Key.Space, char_ = ' ' },
+    new() { key = Key.A, char_ = 'a' },
+    new() { key = Key.B, char_ = 'b' },
+    new() { key = Key.C, char_ = 'c' },
+    new() { key = Key.D, char_ = 'd' },
+    new() { key = Key.E, char_ = 'e' },
+    new() { key = Key.F, char_ = 'f' },
+    new() { key = Key.G, char_ = 'g' },
+    new() { key = Key.H, char_ = 'h' },
+    new() { key = Key.I, char_ = 'i' },
+    new() { key = Key.J, char_ = 'j' },
+    new() { key = Key.K, char_ = 'k' },
+    new() { key = Key.L, char_ = 'l' },
+    new() { key = Key.M, char_ = 'm' },
+    new() { key = Key.N, char_ = 'n' },
+    new() { key = Key.O, char_ = 'o' },
+    new() { key = Key.P, char_ = 'p' },
+    new() { key = Key.Q, char_ = 'q' },
+    new() { key = Key.R, char_ = 'r' },
+    new() { key = Key.S, char_ = 's' },
+    new() { key = Key.T, char_ = 't' },
+    new() { key = Key.U, char_ = 'u' },
+    new() { key = Key.V, char_ = 'v' },
+    new() { key = Key.W, char_ = 'w' },
+    new() { key = Key.X, char_ = 'x' },
+    new() { key = Key.Y, char_ = 'y' },
+    new() { key = Key.Z, char_ = 'z' },
+  };
+  public struct KebKey {
+    public Key key;
+    public char char_;
+  }
 }
\ No newline at end of file