Jekyll And Hyde

that one fancy book about Dr. Jekyll (aka spamton but softie'd) having a middle age crisis and randomly becoming his evil version aka Mr. Hyde (aka shikyou but gender bender'd) and at the end he uhhh fully becomes Mr. Hyde and kills everyone or something idk i have never read the book

guy 1: hey my guy have you ever read jekyll and hyde?
guy 2: yeah i read it it's pretty cool even though there's 69420 plotholes