Angmongui Hyeongsang

Jong-U and Da-Eun are still living in a terrible hell. Then one day, a murder case reminiscent of the past Gosiwon case and the pension case takes place, and the detective Jeong, who was investigating the two cases at the time, looks for Jong-U and Da-Eun. And the terrible nightmare is gradually approaching.
(Source: Naver, translated)
Note: The chapter count includes a prologue.