Twisted Story, Dark, Abuse (BL)

A pedophile tried to get close to a child so he can have sex with him but the kid ran away because he was scared. The parents found out and the pedo moved away. Years later after the kid is in high school he was looking for the niichan he knew when he was kid.

Twincest and crazy mother

I think this is more like sad story. A man who works by selling his body got beaten up by another man whose girl slept with him. Later he was found by a man name Kaoru who keep calling him as Mamoru, his little brother. The man found out that Mamoru is actually passed away and he decided to stay with Kaoru and become Mamoru, Kaoru's little brother

This is sad story about unrequited love that never reciprocated and the seme hallucinating that his love is reciprocated. The real person never love him back. Ever.

Bad ending, bullying, depressing story.

Seme is abusive person who is in physical relationship with uke who is full of mystery
Tragic sad ending
*spoiler : I don't think it's Miki's son. The kid born 10 months after the incident

Omegaverse. Both alpha brothers are manipulative. They both love omega uke sincerely but they are twisted. Not that dark story but typical omega discrimination. Oh and one of the alpha is the omega fated partner. No 3P.