Buso Renkin: Youkoso Papillon Park e

Busou Renkin: Youkoso Papillon Park e is a Action/Hack and Slash video game published by Marvelous released on June 28, 2007 for the PlayStation 2.
This takes place after the events of the anime. Throughout the game you’ll fight in a park in different stages with hordes of enemies. At first you only get to use Kazuki Muto and his Sunlight Heart, and Tokiko Tsumura with her Valkyrie Skirt. But the gameplay is really fun.
– Trivia:
To unlock Victor Powered, the player needs to max all stages, wich is something quite hard.