Suicidal MC

MC legit tried to kill himself in the last few chapters (ML stopped him tho thank god). MC def has survivor's guilt, PTSD, and prob depression as well because all his friends died and he was the only one left alive after a huge dungeon break

Happy end

MC has survivor guilt over being the only one alive after a serial killer killed all the ppl in his orphanage, and he helped the killer after the killer passed out from the cold before the killer massacred the orphanage. Cue HUGE guilt complex over saving a stranger that turned out to be a serial killer who killed all of his family (the orphanage). Dedicates his life to find the killer and kill him and himself after he's done

happy end