hirai yukio, original, archived source, bad link, 1girl, bare legs, blue sky, brown eyes, brown hair, closed mouth, cloud, day, diving, engineering nonsense, eyelashes, falling, full body, gloves, helmet, leotard, looking at viewer, mechanical wings, mountain, no pupils, orange gloves, orange leotard, orange shoes, orange sleeves, outdoors, profile, puffy short sleeves, puffy sleeves, shoes, short sleeves, sky, smile, wings, yellow helmet, yellow wings