sumeragi setsuna, ongeki, highres, 1girl, arm support, bare shoulders, bikini, black jacket, black shorts, blush, breasts, choker, closed mouth, collarbone, eyewear on head, hair between eyes, jacket, kinakollll, long hair, long sleeves, looking at viewer, navel, open clothes, open fly, red eyes, short shorts, shorts, sitting, small breasts, smile, solo, stomach, swimsuit, thighhighs, thighs, white background