I Narareul Eopsael Yejeongindeyo

A former Skeleton King named Kim Isaac is now reborn as an infant in a onesie after being deceived and sealed by the gods. He is born into a pious family within the Holy Empire. Though he cannot yet walk or speak, he remains capable of planning. His loyal demon followers operate in secret, and he holds a deep resentment toward those who wronged him. His return is not for innocence, but for vengeance. The empire is unaware of the threat he poses, and those who wronged him will soon face the consequences.