1boy, 1girl, against glass, blonde hair, blush, breast press, breasts, breasts on glass, completely nude, female pubic hair, grey hair, hair ornament, heart, heart-shaped pupils, hetero, indoors, lactation, large breasts, lexington (warship girls r), long hair, mixed bathing, nipples, nude, open mouth, ponytail, pubic hair, qingmingtongzi, saliva, sex, sex from behind, shower (place), showering, soap bottle, solo focus, standing, standing sex, stomach, symbol-shaped pupils, testicles, tile floor, tile wall, tiles, tongue, tongue out, torso grab, unaligned breasts, warship girls r, water