1girl, ass, bare_shoulders, barefoot, bikini, black_bikini, feet, frilled_bikini, frills, from_behind, full_body, invisible_chair, joukamachi_no_dandelion, long_hair, looking_at_viewer, low_twintails, nijizuki_shino, red_eyes, red_hair, sakurada_akane, simple_background, sitting, soles, solo, swimsuit, twintails, white_background