1girl, armpits, arms_behind_head, blush, bow, breasts, brown_hair, casual_one-piece_swimsuit, cleavage, collarbone, dot_nose, earrings, frilled_one-piece_swimsuit, frills, hair_tie_in_mouth, idolmaster, idolmaster_shiny_colors, jewelry, large_breasts, long_hair, looking_at_viewer, mouth_hold, one-piece_swimsuit, oohashi_ayaka_(artist), pink_one-piece_swimsuit, red_eyes, simple_background, smile, solo, sonoda_chiyoko, standing, swimsuit, tying_hair, white_background