1girl, afloat, bikini, black_hair, blush, breasts, breasts_apart, eyepatch_bikini, eyewear_on_head, fate/grand_order, fate_(series), groin, hair_ornament, long_hair, looking_at_viewer, lowleg, lowleg_bikini, lying, medium_breasts, navel, on_back, red_eyes, side-tie_bikini_bottom, solo, sunglasses, swimsuit, water, white_bikini, xxxnekota, yu_mei-ren_(fate), yu_mei-ren_(swimsuit_lancer)_(fate)