|This article is about a/an transformation device in Madan Senki Ryukendo.|
The Dagger Key activates. When it was first activated it fused with GekiRyuKen to become Twinedge GekiRyuKen. The seal on the Dagger incated that it was itself a key but it could be used as a weapon too. Dagger Key was meant to be Ryuguno's but after getting it Fudou gave that key to Kenji.