Blackout

Once a successful pianist, Ha Jun-Seo now works as a manager for a friend who is also a pianist. Jun-Seo, who spends his days wasting his days drinking and clubbing, loses consciousness when his last memory is a forced one-night stand with a stranger at a club. Jun-Seo wakes up in the house of a man he has never seen before. Kang Woo-Jin is a large, fierce-looking man with a scar on his face. "Don't you remember me?" Woo-Jin, who seems to know him, makes Jun-Seo uncomfortable and tries to run away. Woo-Jin smiles meaningfully and says from behind. "See you later, Ha Jun-Seo." A few days later, Woo-Jin reappears as his friend's new employer...

Will Jun-Seo be able to finish the job under Woo-jin's obsession?

(Source: Bomtoon, translated)