
It feels disjointed coz..
Spoiler.......
It's set to be a multi-verse/alternate reality sort of thing. S1 Seme and S1 Uke got sent to alternate realities wherein they're the only ones who remembers what happened in S1 and not their partners.
So in S2 we got S1 Uke with S1 memories retained and S2 Seme who basically met the Uke for the 1st time.
I'm not sure if they're gonna follow through with the novel though where S3 is gonna be S1 Seme with S3 Uke (who has no memories of S1) or expand further with S2's stories til they actually have children but ye. ( ・_・) It feels like I read a different manhwa.

In this story, Arock was always destined to become an omega and also end up with Kloff. Since in the first time linga they ruined this and it still resulted in Rapiel's death, they go back in time to have a second chance. In season 2, we see Arock come back and get his chance - so he has the memories of what happened in season 1. In the 3rd timeline, the one who returns is Kloff. He will have his memories intact from the 1st timeline.
It's like the first season was a whole other manhwa BOY WHY ARE WE FUMBLING