Gyochaseon

Sung-Yeol loses his mind after stabbing his lover who tried to kill him. It was Ja-Seong who accidentally saved him. Ja-Seong allows Sung-Yeol to stay at his house until the heavy snow stops. That night, Ja-Seong places his hands on Sung-Yeol’s chestnut-like body. Sung-Yeol seduces Ja-Seong by telling the man mysterious stories. Here lies the lives of two men whose kept secrets begin to overlap.

(Source: Bomtoon, translated)

Note: Includes 8 extra chapters.