What is Omegaverse? I will not care about It~ (ToCF fanfiction)

Suddenly he wakes up in a strange environment.
super soft bed, very comfortable pillows, plush but comfortable silk blanket covering up to his stomach.

"young master cale? are you feeling better?"

he suddenly realized something-

1. I'm sure I wasn't this "Cale henituse" before. but why do i have all his memories?

2. The original cale henituse should be older than this in the novel, but why now I'm 10 years old in his body?

3. I don't think there's anything about gender differentiation in the novel i read. so what happened?

Kim rook soo suddenly Get reincarnated or transported to some novel world, the problem is this isn't the body of cale henituse that he knows. The cale he knew was 18 years old when he start His debuted in the novel. then he was never mentioned again until the latest chapter he read.

and again- what is gender differentiation? alpha? omega? Beta? Is that some kind of drug or poison?

Kim rook soo-/not that, now he Is Cale henituse.
So he had to learn this new world without being able to rely entirely on the plots he knew.

after he tackles Choi han- aspiring hitter from "cale henituse" he will live the lazy slacker life he dreamed before.

what bad things could happen?

XD