brll, yuuka (blue archive), yuuka (track) (blue archive), blue archive, absurdres, commentary, highres, 1girl, bare legs, blue eyes, blue hair, blue jacket, blue shirt, blue sky, blush, breasts, closed mouth, cloud, cloudy sky, day, embarrassed, feet out of frame, frown, furrowed brow, grass, gym shirt, gym uniform, jacket, knees together feet apart, leaning back, long hair, looking at viewer, medium breasts, off shoulder, official alternate costume, open clothes, open jacket, outdoors, parted bangs, ponytail, shirt, short sleeves, sitting, sky, solo, track jacket