happoubi jin, iihara nao, boin, boin lecture, game cg, 00s, 1boy, 1girl, blush, bottle, breasts, breasts apart, chair, closed mouth, day, desk, drawer, dress, facing another, grabbing another's breast, green eyes, groping, hair ornament, hairclip, hand on breast, hat, hetero, huge breasts, large breasts, leaning forward, long hair, looking at another, looking to the side, nervous, no socks, nurse, nurse cap, on chair, pantyhose, pen, pencil, pink hair, pocket, red hair, short sleeves, sitting, slippers, solo focus, spread legs, sunlight, teacher, teacher and student