Archangels

Archangel Rain is not just an ordinary angel, he is considered as one of the most powerful angel [Archangel]. One day Father gives him a job, and it is to look after and protect Irene [A mortal] from evil prince of lust Sehun who likes Irene so much but never got a chance to poses her because Father always look after her, Irene is very precious to Father, Irene thought children how to be good, fed beggars at the street, family-oriented and always active in church activities. (basically, she is almost perfect and in addition to that, she's a beautiful woman as well).

Sehun slays all the guys that Irene fall in love with resulting for Irene to be single since birth, although Sehun is one of the 7 princes of hell he can't have Irene because Father always sent an angel to look after her, however Sehun's power is far greater than ordinary angels so Father decided to send one of the archangel to look after Irene and it is Archangel Rain.