[Yuunabe Shinkouchuu (Tanabe Kyou)] The School is Occasionally a Sex Shop 2 ~Year ●, Class 1, Seat Number 1:Aikawa Ren~ [Black Grimoires]

Class 1, Seat Number 1 has a secret: Aikawa Ren's classroom doubles as a brothel after hours under a sly new "educational policy." A male teacher seduces the pigtailed maid into the scheme, reassuring her that participation is entirely optional and that "there's no girl here who doesn't love to do lewd things." Eager and inexperienced, she throws herself into preparing with a toy—blushing, breathless, practicing hard so her first real client feels incredible. Things escalate wildly when a colleague stumbles onto the scene mid-act, catching the maid servicing her sensei with devoted enthusiasm while he towers over her, lost in pleasure. The credits page hints at more where that came from, with a translator's note joking, "I'm a teacher too... maybe I should check my school at night..."