Good Fortune Comes To The Demon Who Smiles

A week after Emu Ikariya's father died, a debt collector showed up on his doorstep. His late father left behind a debt of $40,000. Now, Emu has to pay up.

Emu grew up poor. He's not particularly fond of smiling or other people. No one understands him and all he's ever known is bad luck.
There's no way Emu has the money to pay back his father's debts. That's when the debt collector suggests he sell his body at a secret gay club. Just then, a high school classmate of Emu's named Nenji Fukutomi appears out of nowhere and proclaims, "I'll buy Ikariya!" What on earth is he talking about?!

(Source: Manga Plaza)