@Bluebird I read the novel it is really for revenge but it is kind of complicated highly recommend the novel in his first life the seme d*ed a miserable d*ath (not miserable but lonely d*ath after uke dies he raise his childern till d*ath and they abandoned all him later on) also not mentioned in manhwa but in first life uke done worse than manhwa let on he also bullied the former lover of the seme more and yes he didn't mean to k1ll him but he had made people hit his lover multiple times before and there will be
Spoiler!
Three timelines (we are in second timeline where uke remembers) in third timeline it is seme who remembers but all three timeline is not truly happy the second and third will much happier (but is bittersweet but all second and third timeline is much better than first timeline but they get tormented in past life's karma