Ch 6 of the side story (not ch 6 of the main story I know it’s confusing rip) third party fingers uke while seme watches.
Tentacles fuck the Uke in front of the seme. Uke is ashamed at being fucked wide open in front of seme while seme is super turned on and fucks Uke himself after
Early on seme and uke have sex at a sex club while someone watches
Everyone fucks each other. Third parties. Ntr.
Uke has a gf but I don’t really care LOL
Ch 17. Not really ntr but seme has phone sex with uke. And a third party who has a crush on uke listens and masturbates
After that chapter there are many panels of semi cucking lol it’s funny and sexy!!!!
Incest. Seme sees his brother have sex a lot
Shingeki no Kyojin dj - Kare to Kare no Renai Jijou