Yuinseolgye

At the Changgwan, the musician So-seo, who played the biwa, meets Ki Se-Won, the first person to recognize his talent. Though he opens his heart to his warm demeanor, strange events soon unfold, and So-Seo, realizing Ki Se-Won is behind them, tries to escape. But he is already caught in his relentless grasp, and Ki Se-Won, watching So-Seo crumble, confronts the changes within himself.

(Source: Ridibooks, translated)