matemi, astolfo (fate), fate/apocrypha, fate (series), highres, 1boy, ass, ass focus, back, black bow, black bridal gauntlets, bow, braid, bridal gauntlets, elbow gloves, flaccid, from behind, full body, gloves, hair intakes, half-closed eyes, hand on own ass, invisible chair, long braid, looking at viewer, looking back, male focus, nude, open mouth, penis, pink eyes, pink hair, single braid, sitting, smile, solo, testicles, trap