1girl, o, breasts, brown_hair, collarbone, covered_navel, hair_ribbon, hakozaki_serika, hat, heart, idolmaster, idolmaster_million_live!, inoue_sora, loli, long_hair, looking_at_viewer, new_school_swimsuit, one-piece_swimsuit, ribbon, santa_hat, school_swimsuit, simple_background, small_breasts, solo, swimsuit, twintails, very_long_hair, white_background, white_one-piece_swimsuit