riya (01214), melusine (fate), fate/grand order, fate (series), commentary request, highres, 1girl, animal ear fluff, animal ears, bare arms, bare shoulders, blush, breasts, brown eyes, closed mouth, covered collarbone, grey hair, hands up, kemonomimi mode, long hair, looking at viewer, one-piece swimsuit, paw pose, simple background, small breasts, solo, sparkle, swimsuit, white background, white one-piece swimsuit