To My Hated Younger Brother

The following content is intended for mature audiences and may contain sexual themes, gore, violence and/or strong language. Discretion is advised.
A 'Ghost' has taken over the body of Do-hyun's deceased younger brother, Seo Ji-woo, who was obsessed with him. The 'Ghost' proposes that it will leave the body if Do-hyun has relations with it four times. Do-hyun crumbles under fear and hatred toward his brother and the unknown entity, as well as a longing for his family…