iash, cu chulainn (caster) (fate), cu chulainn (fate), cu chulainn (tropical rune summer) (fate), cu chulainn alter (fate), cu chulainn alter (under the same sky) (fate), fate/grand order, fate (series), 2boys, baseball cap, black hat, blue hair, blush, closed eyes, dual persona, earrings, facial mark, half updo, hat, jacket, jewelry, long hair, male focus, multiple boys, open clothes, open jacket, ponytail, red eyes, simple background, smile, upper body, v, white background, white jacket