1girl, alternate_costume, animal_on_head, bird, bird_on_head, bird_tail, bird_wings, blonde_hair, brown_eyes, chick, crop_top, flat_chest, flippers, innertube, mouth_hold, multicolored_hair, niwatari_kutaka, on_head, one-piece_swimsuit, puuakachan, red_hair, school_swimsuit, solo, swimsuit, swimsuit_under_clothes, tail, touhou, two-tone_hair, visor_cap, whistle, whistle_around_neck, wings