Second timeline: Arok remembers Klott did not. Klott had dreams of first timeline but even till the end of the timeline/ life Klott still believes it is just dreams. Arok still cannot avoid being scammed (just like what happened on 1st TL). Klopp became his financial adviser avoid being scammed (just like what happened on 1st TL). Arok became a omega again even tho this time he was not tricked but perhaps in relation to the 1st TL and butterfly effect he turned into omega. Third timeline: Klott remembers but Arok did not. Klopp lives in guit seeing how bright Arok is without all the bad background and think back of the time how much torment Arok had with the 1st TL him (many scenes not in the manhwa) he want to say sorry for the first timeline Arok but he will never meet the 1st TL Arok again to say sorry so he try to make up everything etc etc and the 3rd TL Arok later have panic attacks because of the 1st TL butterfly effect and ptsd but do not remember the 1st TL  (too much to explain but yeah there is three timelines the three books are very well written and very interesting.

Timelines. The first timeline is where you all read the second timeline is where Arok the uke start all over again where he remembers everything but not Klopp and the third timeline is where Klopp remembers everything but not Arok