Sungyeoreul Beorineun Bangbeop

During peaceful days, the free-spirited demon Kaisel suddenly receives a visit from a priest who unexpectedly proposes a relationship. Despite Kaisel 's bold ambition to abandon his virginity, the priest possesses no knowledge of sexual relations, and Kaisel is intrigued. He offers to teach him everything, from beginning to end...

*"It's a good thing for me to lose a priest..."

"I will sacrifice myself to grant your wish."*

(Source: Mr.Blue, translated)