ymdk htp, akatsuki (kancolle), kantai collection, absurdres, highres, 1girl, black hair, blue one-piece swimsuit, blue sailor collar, blue sky, blush, competition school swimsuit, day, flat cap, hair ornament, hat, long hair, no pants, one-piece swimsuit, open mouth, outdoors, pool, purple eyes, purple hair, sailor collar, sailor shirt, school swimsuit, school uniform, serasuku, shirt, sitting, sky, smile, swimsuit, swimsuit under clothes, tree, wariza, water