2girls, blue_hair, blue_one-piece_swimsuit, brown_eyes, closed_mouth, ensemble_girls!, high_ponytail, hisayoshi_(hisa), japanese_clothes, kodama_ichika, long_hair, multiple_girls, one-piece_swimsuit, open_mouth, purple_eyes, purple_hair, school_swimsuit, swimming, swimsuit, syachi_ikari, upside-down, white_background