6+girls, d, ^_^, ahoge, animal_ears, bare_arms, bare_legs, bare_shoulders, barefoot, blue_eyes, blue_one-piece_swimsuit, blush, braid, brown_hair, closed_eyes, covered_navel, facing_viewer, forehead, green_hair, green_hairband, grey_hair, hair_between_eyes, hair_ornament, hairband, headgear, headset, kizuna_akari, long_hair, looking_at_viewer, low_twintails, multiple_girls, nose_blush, old_school_swimsuit, one-piece_swimsuit, own_hands_together, pink_hair, purple_eyes, purple_hair, red_eyes, ryogo, school_swimsuit, shikoku_metan, simple_background, smile, swimsuit, tail, touhoku_kiritan, touhoku_zunko, transparent_background, twin_braids, twintails, v-shaped_eyebrows, v_arms, very_long_hair, vocaloid, voiceroid, voicevox, yellow_eyes, yuzuki_yukari, zundamon