3girls, animal_ear_fluff, animal_ears, armpits, bare_shoulders, black_jacket, blue_archive, blue_eyes, blush, breasts, collarbone, competition_swimsuit, covered_navel, day, extra_ears, finger_on_trigger, grey_hair, halo, hand_on_own_hip, highleg, highleg_swimsuit, holding, holding_water_gun, hoshino_(blue_archive), jacket, large_breasts, lkeris, long_hair, long_sleeves, looking_at_viewer, mismatched_pupils, multiple_girls, off_shoulder, official_alternate_costume, one-piece_swimsuit, open_clothes, open_jacket, outdoors, parted_lips, ponytail, serika_(blue_archive), serika_(swimsuit)_(blue_archive), shiroko_(blue_archive), shiroko_(swimsuit)_(blue_archive), sideboob, sidelocks, solo_focus, standing, swimsuit, thighs, two-tone_swimsuit, wading, water, water_gun, wet, wolf_ears