Bridle

Je-Hyeok, a priest who repents of his childhood as a bully and lives for God, receives a necklace as a reward for the confession.
As soon as he puts on the necklace, Je-Hyeok's body heats up and a counselor approaches. Playing with and teasing the priest's erect penis, he reveals that he is an outcast who was bullied by the priest during his school days...

Note: Chapter count includes a prologue