Kang Sihyun was humanity's strongest Devil Hunter.

To stop the devil inside him from taking over, he chose death.

Instead, he wakes up in the body of a tiny female imp named Asmode.

There's one problem.

Little devils survive by making contracts with humans.

Now the hunter who spent his entire life killing devils has become one of them.

Forced to lend his overwhelming power to desperate hunters in exchange for their life force, Sihyun reluctantly begins gathering contractors, starting with a young hunter willing to sacrifice everything to save her family.

Each new contract makes him stronger, earns him devoted followers, and blurs the line between salvation and temptation. The world's Devil Hunters are about to discover that the greatest devil they've ever met might also be their greatest ally.