Bunsin

At her sister's funeral, Bi-Do first meets her sister's lover, Mr. Shin.

She believes Shin caused her sister's death, but contrary to her expectations, he approaches her as her only savior. The more the being she once considered a demon begins to feel like an angel, the more deeply she becomes obsessed with the man she should hate. Bi-Do is plunged into a tangled web of love and guilt, redemption and destruction.

(Source: Naver, translated)