smcms-m, gon freecss, killua zoldyck, hunter x hunter, 2boys, adjusting eyewear, alternate costume, arm up, black hair, black tank top, blue eyes, brown eyes, collared shirt, cropped legs, drinking straw, drinking straw in mouth, eyewear on head, holding, holding swim ring, innertube, male focus, multiple boys, open clothes, open mouth, open shirt, orange shorts, outdoors, palm leaf, shirt, short hair, short sleeves, shorts, smile, summer, sunglasses, swim ring, tank top, transparent innertube, white hair, widow's peak, wing collar