Very cool doujin fighting game with soul based on the classics Key and Tactics visual novels (Moon, ONE, Kanon and Air) with good gameplay, a great soundtrack, great scenarios, and an overall fun game.

I recommend this one for someone who is looking for a good casual fighting game, for hardcore fans of Key and Tactics, or as a gateway to getting to know the visual novels of the two developers.

https://www.youtube.com/watch?v=ydlWNZWx5CM