[Jairou] Rankou de Wakarou! -Shinjin Kyoushi Fujiwara-san no Ayashii Kyouin Nikki- Ch.4 [biribiri]

Teacher Fujiwara Niko has spent three years getting intimately acquainted with her ten students, and on graduation day she decides they deserve one final lesson none of them will ever forget. Between secret classroom trysts captured on camera and a bound-and-collared boy getting pounded on film, her suspicious teaching journal has been cataloguing every depraved after-school encounter. Now, live on stage at the Ishikawa Academy ceremony, she strips down alongside all ten of her graduating students to publicly evaluate exactly how much they've grown, ending their school days in a cum-drenched group farewell.