>>3686158Depends on the genre of porn. Traps, young twinks and to a lesser amount shotas have noticeable amounts of forced sissification and drug use (usually as part of the "sissy training"), while cheating and omegaverse autism are more a think of "traditional" yaoi featuring older men.
Rape methods also vary by genre. In porn featuring shotas and young men blackmailing if more predominant, while in porn featuring adults (yaoi and bara) the use of violence and threats. With traps is a mix of both methods, and the rape is downplayed by turning the trap into a (mindbroken) slut who actually enjoys having rough sex.
Ryona and abuse are popular with Koreans for some sick reason, so it's not rare to see manwha depicting that. Porn is banned in Korea, so abuse is more present in non-porn comics than in porn ones as a way to be "exciting" without showing nudity.
Regardless the rest (bugs/bestiality, enemas, scat, mpreg), they're not very popular, but I have had my fair share with them due to my inability to read tags (and the uploaders' inability to properly tag shit. Still, they're nowhere as popular as in straight porn.