togawa sakiko, arknights, bang dream!, bang dream! it's mygo!!!!!, game cg, highres, official art, third-party source, 1girl, bird, black jacket, black shorts, black socks, blue hair, boat, brown shoes, cloud, day, horns, jacket, long hair, long sleeves, outdoors, over-kneehighs, pier, shoes, shorts, socks, solo, standing, tail, thighhighs, togawa sakiko (master of melodia), two side up, water, watercraft