
Try analyzing it on paper xD. Ik it's confusing analysis but when you link the ones who went to an alternate timeline, it'll make sense.
You can see that OGAeroc and Alternate Timeline 1 Aeroc are the same person. The same one who caused the death of Rapiel. But the Kloff of Alternate Timeline 1 is not the OG Kloff. He is the Kloff before darkening. Hence, I don't believe people should be angry with him because he truly did not cause all that trauma. That was OGKloff's doing.
OGKloff and Alternate Timeline 2 Kloff are the same person. They are the ones who abused and used Aeroc. But the Aeroc of Alternate Timeline 2 is not the OG Aeroc. He is the still prideful Aeroc without the trauma. Also, he cannot break off the bond by OG Aeroc which is perfect punishment for OGKloff.

Thanks! But heads up! I might get some wrong stuff here and there like the imprint part because it was just a discussion back then on the comment section of the novel about why the alternate timeline 2 shows karma to the way OGKloff treated OGAeroc (Imprints are a thing in the omegaverse yes but it's been 2-3 years?? Since I last read that thing)
He does suffer a lot with frequent nightmares, and a lot more often than OGAeroc did because he had an entire lifetime in the first life(where he got to grow old) to think about his actions.

Omg thank fuck I found some people talking about it. Anyways the imprinting part was right xD I did not hallucinate it
https://www.novelupdatesforum.com/threads/into-the-rose-garden-%EC%9D%B8%ED%88%AC-%EB%8D%94-%EB%A1%9C%EC%A6%88-%EA%B0%80%EB%93%A0-bl.160406/
1st life Aeroc and 1st life Kloff meets each other, both makes wrong decisions (Kloff keeping his traditions and prejudice against same sex(alpha to alpha) relationships so he intentionally marries an omega just because he is an alpha while Aeroc wanted to threaten Kloff's husband just because he is jealous which led to the death of Rapiel)
This led to the entire shenaniganof season 1. Revenge-filled. Regrets. Both died miserably. Aeroc died realizing just how much his pride (turned to jealousy) led to a miserable death of Rapiel, an innocent omega, as he experienced it first hand. Although he grew old, Kloff died always thinking of how his pride and revenge caused Aeroc to intentionally harm himself despite the fact that he loves him. He indirectly killed the man he loves.
They will never meet again. Aeroc and Kloff of this life will never meet again. The timeline split for them.
Alternative timeline 1: Aeroc has his memories of his first life. In this life, he chooses to forfeit his jealousy and pride. He tries to make amends of the first life and to Rapiel by setting up Rapiel and Kloff of this au. But it backfires because the more he acts like this, the more compassionate he acts, the more Kloff falls for him. In this timeline, he is also more honest and he is able to express his emotions more. Truly, it was this change in Aeroc's actions that led Kloff to love him enough that he needed a reason to not propose to Rapiel. And this was why he beat up the alphaxalpha couple (?tryna remember this part but I do know he did that because he also cannot admit that he is having feelings for an alpha when it is taboo, some chapters later even he says he should hide the relationship from Martha as she is traditional). Small actions from Aeroc turned their relationship into a healthier version of what couldve been if Aeroc had been more honest and less prideful and petty(which we remember in the first life that caused Rapiel's death).
Note: the Kloff of this au may receive some memories from the first life but take note, he is not the same kloff as he is the kloff before all the anger and revenge.
Alternative Timeline 2: Kloff has his memories from the 1st life. He immediately admits his feelings for Aeroc. He does not hide what he feels and he is more honest. But this led to Aeroc, the prideful alpha, to shun him away because such relationships are taboo. Until Aeroc can't because in every lifetime, unfortunately.. Aeroc sucks with contracts. Kloff shamelessly flirts with him but because of Kloff being more honest with his feelings, Aeroc is able to receive his affections without resulting to deathly jealousy. They do end up together. Sadly, the first life Aeroc imprinted on Kloff and Kloff witnessing Aeroc's miserable death led to trauma so he calls for his first born Rapiel in his sleep due to regrets (the one who shouted at him before that "you shouldved named me Aeroc instead of Rapiel") also led to a funny scene where Aeroc confronts the married couple wolflake and rapiel that rapiel is having an affair with his kloff lol only to get debunked by rapiel himself because in this timeline, he doesn't even care for kloff because he met wolflake immediately (Love this couple istg) and Kloff himself assures that Aeroc is the one he truly loves. Again, this is a healthier version of what could have been if Kloff acted differently. But do take note, he will always suffer migraines or whatnot because 1st life Aeroc imprinted on him. He cannot fully be at peace. Imprinting is harder for alphas, the same way heat and bond is shackling for omegas. I think he also cannot form bonds because of this so it will disappoint Kloff but mot as much to Aeroc (who at this point thinks he is still an alpha)
Note: That imprint cannot be broken off by the current Aeroc because he is not the og Aeroc who imprinted on Kloff.
Addtional note: Aeroc is an omega. He is an alpha turned omega in all lifetimes. The pills on the first life probably accelerated that reveal. 1st life Aeroc gets drugged many times by Kloff, speeding up his omega process. Alternative Timeline 1 Aeroc is an omega who manifested the symptoms early again because he carried the trauma from the 1st life and also because he is immediately aware of what he feels for Kloff. Alternative Timeline 2 Aeroc is implied to feel some changes in his body. Funny that he even laughs at Kloff because Kloff wants to get him pregnant but "I am an alpha, how can I get pregnant?" He just doesn't know that the changes he is feeling is actually the start of heat symptoms. Aeroc of this life is a late bloomer.
It's been a while with the novel so I may be wrong in stuff there but I hope you get the general gist.
More notes: Folks saying that Kloff does not deserve Aeroc in this life. No actually, the first life kloff who became alternative timeline 2 kloff does not deserve their aeroc on that timeline. This Kloff is healthy. Ya'll just confusing him with the other pissy mf bastard Kloff.