sei shoujo, ichinose sayaka, toudou yuuto, cleavage (game), empress (studio), game asset, visual novel cg, 00s, 1boy, 1girl, blouse, blush, board eraser, breasts, brown hair, ceiling, chalkboard, classroom, cleavage, closed eyes, couple, covered erect nipples, dutch angle, earrings, fingernails, from behind, glasses, grabbing another's breast, grabbing from behind, groping, hetero, huge breasts, indoors, jewelry, lipstick, long hair, makeup, mature female, no bra, open clothes, open mouth, open shirt, pencil skirt, red hair, school, school uniform, shirt, short hair, skirt, standing, teacher, teacher and student, teeth, tongue, unbuttoned, upper body, very long hair