sakura romako, katakura ryouko, 12nin no onna kyoushi, 12nin no onna kyoushi re-innovation, 12nin no onna kyoushi re-innovation -in-, carmine (company), game cg, 1girl, blonde hair, breasts, censored, chalkboard, classroom, closed eyes, demonstration, double bun, female focus, female masturbation, female teacher, fingering, grabbing another's breast, grabbing own breast, groping, hair bun, indoors, large breasts, masturbation, mosaic censoring, nipples, nude, open mouth, pussy, pussy juice, school, solo, spread legs, teacher