I think it's their bond symptoms or smth alike. Aeroc said that he felt like "Kloff is the only one Aeroc ever wanted". That, Aeroc practically said that over all of the people he could have, Kloff was the only one that ever caught his eyes, sparked something within him.
And that bond thingy probably is carried with him by soul from first timeline lol Because somehow even his turning into Omega (which should be triggered by a medicine) in this timeline as if a late-blooming. But yeah, I hate Kloff, it's like this 2nd timeline gloss his 1st timeline crime and disgusting behavior over to a clean slate. Nyeh (╯°Д °)╯╧╧

It literally had me wishing Aeroc was dead in the first timeline cause atp it’s better to start anew, clean slate, NO TOXIC ML. Totally understandable why the ML wanted revenge but the actions are so disproportionate to what the MC did (or maybe it is just a matter of perspective). But I totally lost all amore for the ML and the relationship even with the groveling arc cause what he did are just irredeemable lmao.
It had me questioning if the MC had a few loose screws to actually want to go back to the ML. That’s like shooting yourself in the head willingly. He could’ve had the Marquise but NO, he just HAD to go back to the ML.
Oh well. We all have different versions pf a happy ending I guess.