1girl, alternate_costume, ass, bare_back, bare_shoulders, bikini, blush, breasts, butt_crack, closed_mouth, feet_out_of_frame, from_side, girls'_frontline, green_hair, hair_ornament, hair_scrunchie, hairclip, halterneck, hand_on_floor, heart, heart-shaped_pupils, legs, long_hair, looking_at_viewer, medium_breasts, mk48_(girls'_frontline), on_water, orange_eyes, pool, red_bikini, scrunchie, side-tie_bikini_bottom, sideboob, signature, sitting, smile, solo, star_(symbol), star_print, string_bikini, swimsuit, symbol-shaped_pupils, thighs, tochi_keisuke