[Nanamatsu Kenji] Tama ni wa Ikinuki shinai to ne + Zoku Tama ni wa Ikinuki shinai to ne (Kijou na Kimi no Mesu no Kao ~Kokan ni Sobie Tatsu Mont-Saint Parfait~) [mysterymeat3]

A worn-out teacher books a bed-in-the-classroom session with Kanna, a sweet-faced tomgirl prostitute whose plush, inviting ass proves far too sexy for him to resist before he gives it a thorough anal pounding. The sequel follows his colleague, who spots a suspicious mark on quiet honor student Mimaki Kouki's neck and realizes the unremarkable boy in the school blazer is the same crossdressing charmer he met at a brothel—and Mimaki wastes no time pinning his flustered sensei down for a lingerie-clad ride he's too guilty to refuse. Two linked stories of after-hours prostitution where the line between mentor and sinner gets thoroughly, shamelessly crossed.