riya (01214), melusine (fate), fate/grand order, fate (series), absurdres, commentary request, highres, 1girl, bare arms, bare shoulders, black one-piece swimsuit, blush, breasts, brown eyes, closed mouth, feet out of frame, from side, grey hair, knee up, long hair, looking at viewer, looking to the side, one-piece swimsuit, simple background, sitting, small breasts, solo, swimsuit, very long hair, white background