The Guardian (P.JM X K.SG)

Once every angel turns 21, they are required to enlist for the Saint Holy Training Program where they are to be the, "Guardian Angels," a special task force that is served to protect the human realm at all cost, commanded under Gods order.

An angel, named Park Jimin, has no desire of becoming one of the Guardian Angels, where he is and ordinary bystander who minded their own business, until he accidentally broke one of the Laws from the Holy Sacred Prayer.

After Gods hearing of the fatal crime that was broken, Park Jimin was automatically assigned to serve as a Guardian Angel, as a punishment for his actions. Park Jimin who is against of becoming a Guardian Angel, must now serve and protect a special someone.