1girl absurdres armpits arms_behind_head arms_up bangs bare_shoulders bikini black_hair blue_eyes blue_sky blush breasts closed_mouth commentary_request highres looking_at_viewer medium_breasts mole mole_under_eye navel one-piece_tan original short_hair sky solo sports_bikini sunlight swimsuit tan tanlines thighs track_uniform two-tone_bikini ulrich_(tagaragakuin)