1boy, 1girl, age_difference, bath_stool, blush, breasts, cleavage, earclip, embarrassed, from_side, greyscale, half-closed_eyes, hetero, huge_breasts, long_hair, mixed_bathing, monochrome, naked_towel, nose_blush, onsen, sitting, steam, stool, towel, washing_back, water_drop, wet