Wait who was jong u?

jongwoo u should read other people are hell

*Hell is other people

I have watched the drama but forgot their names. Would you please provide me with some description?

This is a prequel to hell is other people and there even is an sequel on naver webtoon but it is not translated in eng yet it's about jongwoo's life after the experience he had with the eden residents and how yeongsam haunts him jongwoo also becomes schizophrenic (⊙…⊙ )