Available as both manhwa and novel.
Psychopath in Murim
Also known as: 싸이코패스 in 무림 · Murim Psychopath · ssaikopaeseu in murim · Kẻ Tâm Thần Tại Thế Giới Murim · Murim Sociopath · 二流杀手横穿武林 · 武林第一疯子
When he tried returning to virtual reality, the place he logged into was instead the “real Murim.” A once-in-an-era psychopath fell into the Murim due to the Grim Reaper’s mistake. Dong Bongsu's merciless fangs cast a shadow over Murim, which is rife with schemes and malice.