Tensai Kusoyarou no Jikenbo

Amano Yuji: a demon in white coat. He's smart and handsome, but his personality is the absolute worst; he even calls himself a "genius son of a bitch." Although he is no hero, he doesn't forgive criminals and scum. The story revolves around him helping others solve their problems in a harsh and unorthodox way, but at a price of course…