I like how the flow of things kind of felt like she was setting him up to just take advantage of him (monetarily), but he sort of turned the tables on her and got her addicted to sex with him.
Great ending though. Seeing all her 'Cosplay Buddies'...Makes me want a sequel. Containing all of them.
She must be the best employee ever! I mean, good at her job, bangs her boss and brings her hot friends for ffffm group sex? Defenitely best employee ever...
I'm here! And this doesn't need one single sequel, no! This needs to be made a series! First they have a five-way. Then everyone of the girls tries to hog him all for herself in solo chapters. And then the first girl shows them who is the boss by tying them up and forcing them to watch how she rides sensei. Afterwards she still allows them to be his concubines, but she'll be his wife. Maybe a short "After" story with all girl being pregnant as cherry on the cake....
I may have bad news for you...