charlemagne (fate), fate/apocrypha, fate/extra, fate (series), archived source, artist request, highres, 2boys, androgynous, black hair, blue eyes, bow, cape, closed mouth, cowboy shot, double v, fur-trimmed cape, fur trim, gorget, hair bow, hair intakes, horn (instrument), male focus, multicolored hair, multiple boys, pink hair, purple eyes, short hair, simple background, smile, streaked hair, v, white background