The Worst Covenant

Exchanging for power, the cost of revenge is selling oneself!? Follow the passionate newlywed life of an immature S demon and an upright M mercenary! Iya, a young boy seeking revenge for his family who was killed, enters a contract with a demon to help him achieve his goal. After a decade of hiding among mercenaries, waiting for the right moment, he finally enacted his revenge using the power of his contract. As promised, the demon came to greet him. Iya's fate is to suffer in hell, but the demon takes him to a wedding scene. A new twist awaits in this tortured love story.