Care to make a deal with the Devil?

[Sleepy Sloth]

After losing his beloved and his soul, Solace has snapped and embraced the darkness within. He went to a ball and searches around asking girls who fall in 'love' with him for a deal. If once makes a deal, the payment is their own soul. When he was going up to another girl he steps on a bloody black feather. Solace is confused as only one has this type of feather......

[cassette]

this reminds me of Blue exorcist