2girls, black_dress, black_hair, blue_hair, brown_hair, denonbu, dress, green_eyes, hair_ornament, hairclip, hidaka_reina_(denonbu), kuzuya_ramurin, multicolored_hair, multiple_girls, partially_submerged, seto_mitsuki_(denonbu), short_hair, siblings, side_ponytail, sisters, smile, streaked_hair, twins, water, white_dress