Yeah. If you must really know:
In the AU no one tells Jun anything. He doesn’t know Yohan is an alpha or what that even means. He just thinks Yohan is going crazy or is on drugs because Yohan keeps acting weird.
Meanwhile, Yohan is entering his rut cycles during which he hurts and rapes Jun for half a year and then loses memory of hurting him. Yohan also pushes Jun to take mystery pills which would turn Jun into an omega but Jun keeps forgetting to take them so Yohan gets mad and decides to turn to bitching.
I don’t remember how but then Yohan ends up in the hospital. His father then cryptically tells Jun that he thought he found a good female for Yohan but if Jun can’t handle him then he should drop Yohan off at a brothel. Of course Jun has no idea what the fuck he’s even talking about.
Jun thinks Yohan is withdrawing from drugs so he takes him to a remote villa. There Yohan keeps raping him, including nearly crashing the car, then raping Jun out in the wild then pissing on him and leaving him there.
Then Jun finally becomes omega I suppose and enters his heat cycle. The two keep at it for a week with Jun still having no idea what happened to his body. Since they completely trash the villa, they call up cleaners and the owner of the cleaning company starts flirting with Jun. Yohan then shows up all macho glares at him and takes Jun away.
It ends with them driving back and talking about marriage. Yohan also insists they have kids but Jun STILL has no clue he can now get pregnant or what the fuck just happened. He just thinks Yohan now has an ugly dick but he’s back to normal so he must be completely off the drugs.
Also this whole time Jun thinks Yohan is a bum who lost all his inheritance after a failed startup so he became a workaholic because he felt pressured to provide for Yohan. But apparently Yohan is super mega rich or something because his company was the one creating the pills that can turn people into alpha/omega or whatever.
It’s bad.

where can I read the novel of this manhwa?