Kairaku: the broken hearts Elysion

In a red and black ballroom someone's heart is broken, tormenting them into madness until they fall apart.

This is the story of a boy and a girl driven wild by madness.
A story painted with a crazy passion as well as a sadness that tears everything apart in its chaos.
A story about standing up against cruel fate.
This is their story.

[from DLsite English]