diff --git a/yuuki/dice.rb b/yuuki/dice.rb
new file mode 100644
index 0000000..d563ab3
--- /dev/null
+++ b/yuuki/dice.rb
@@ -0,0 +1,18 @@
+#!/usr/bin/env ruby
+# -*- coding: utf-8 -*-
+
+puts"Enterを押して1d100を振れるよ!"
+
+while true
+  STDERR.print"Enterをうちこんでね!(終了はq)"
+  line = gets.chomp
+
+  if line =="q" then
+    puts"さらばだ...。"
+    break
+  end
+
+  printf("%d", rand(1..100))
+  puts"" 
+end
+printf("")