Jeongguk is lonely from not having any friends. He lives in a very religious town, is bullied by peers and other kids, his abused by his father who happens to be the preist, and his mother is a whore. What happens when he summons a demon and makes a deal?

My Demon Friend (Yoonkook)

ジョングクは友達がいない孤独な少年だ。宗教色の強い町に住み、同級生や他の子供たちからいじめられ、牧師である父親からは虐待を受け、母親は娼婦だ。彼が悪魔を召喚し、ある取引をしたらどうなるのか？

シリーズホーム

私の悪魔の友達（ユングク）