Angel Kiss (Bobnakk) summary:

"So, in the end, this contract is about you helping me."Ha-jin has endured relentless bullying since childhood just because of his homosexuality.At a moment when he wanted to give up on life, fate brings him a second chance through the angel Kael, who appears as if by destiny. In exchange for getting rid of his stalker, Ha-jin agrees to an unfair(?) contract from the delinquent angel Kael, who demands his soul.However, as time goes by, this angel... starts to soften?A romance of mutual salvation between Kael, who was lonely without a place to rely on, and Ha-jin.