seseragi azuma, arthur pendragon (fate), fate/grand order, fate/prototype, fate (series), absurdres, highres, 1boy, ahoge, beach, black gloves, black male swimwear, black pants, blonde hair, blue eyes, blue sky, bodysuit, character doll, cloud, cropped jacket, day, diving suit, doll, gloves, horizon, jacket, male swimwear, outdoors, pants, sand, single glove, sky, solo, summer, sweat, toned, toned male, watch, water, wetsuit, whistle, whistle around neck, white jacket, wristwatch