1girl, ass, back, bikini, black_bikini, bracelet, do_it_yourself!!, easy_(aqk7bdqt), from_behind, from_below, hand_on_own_thigh, jewelry, looking_at_viewer, looking_back, looking_down, official_alternate_costume, orange_hair, short_hair, simple_background, solo, swimsuit, yasaku_rei, yellow_wristband