MLs competing with brother/father

2nd ML is ML's much older brother who's basically the main love interest for around 80 chapters

The MLs are father and son, I bet the actual ML is the son

The MLs are father and son (poly ending)

The MLs are brothers (poly ending)

The MLs are brothers

Uke was groomed (and abused) by ML's father

The MLs are brothers (poly ending) and not only that: uke was previously in love with their father

Seme thinks that uke is in love with his older brother (he's not lmao)

Uke initially develops a crush on ML's twin brother (believing him to be the ML)

Uke is initially in an unrequited love/abusive relationship with ML's older brother