[SPOILER]
Yes but not initially. At the start of this TL, he’s still very resentful of Aeroc after everything that happened in TL1. For anyone wondering “but I thought Kloff regretted what he did after Aeroc died?” Yes but remember he also died in that TL from bonding symptoms. In this TL he’s still affected by the bonding and with his final memories of that TL, which is why he’s resentful and revengeful. Later in the TL as he gets closer to Aeroc he really does start regretting what he did to him, getting to see a side of him he never got to see prior the that fateful night Aeroc commited the indefensible, things he never got to know because of the torture and neglect he subjected him to. He also gets extremely depressed because, although he is now with an Aeroc who commited no crime and not traumatized, it’s still not his Aeroc from TL1.
After reading this i want a TL4 where both the TL1 aeroc and kloff reincarnate. But this time aeroc will distance himself from kloff while kloff chase and suffer. Aeroc will instead fall in love with a different alpha who treats him well.
If you’re interested, there’s some fics on AO3 that actually explore that idea! They are really good.
Will 3 timeline kloff realised how much he mistreated 1timeline aeroc?