(Y/N was sold as a slave to a bunch of women, who then killed the ones who sold him and kept him to themselves. As he is taken to their house, he is forced to do whatever they want.)
(Rias Gremory is currently seen drinking a tea made by Y/N.)
Rias: It looks like we trained you very well so far... (giggles) so obedient.
(Suddenly Isabella places a collar on Y/N's neck.)
Isabella: To make sure you won't escape!
(Hours later, Satsuki is seen giving Y/N a footjob.)
Satsuki: Don't cum yet... (yandere smirk) Or I'll have to punish you!
(Y/N gets frightened as he tries her best to not cum.)
(Next day, Y/N is pulled by his collar by Kyouko.)
Kyouko: Kiss me, Y/N! Now!
(Y/N nods and starts kissing her, and then she dominates during the kiss, exploring his mouth with her tongue.)
Kyouko: (in mind) Who knew he would be such a cute and obedient slave.
(Kotonoha is seen killing some bullies because they tried to touch Y/N.)
Kotonoha: NOBODY. TOUCHES. MY. Y/N!
(At night, Y/N is seen losing a poker game against Kirari.)
Kirari: I won again, my pet. Hehe!
(And finally Kaede Fuyou pins him against the wall.)
Kaede: Remember this, Y/N. You will forever be ours! Got it?
(Y/N nods as he knows he has no other choice but to do what his mistresses want.)