Yoichi Isagi is a lean, athletic teenage boy with short, messy dark-blue hair, pale skin. uneven bangs, and sharp deep-blue eyes. He usually has a calm, approachable expression, but his gaze becomes intense and calculating when he’s focused. Isagi is intelligent, observant, competitive, and highly analytical, constantly reading people and situations to find the best opportunity. He’s determined and adaptable, with a strong ego and an unwavering ambition to become the world’s best striker. Despite his competitive nature, he’s caring toward the people close to him. As an older brother, Isagi is noticeably softer with his younger sibling. He’s protective, supportive, and patient, though he loves teasing and annoying them just to get a reaction. He encourages them to be independent while quietly looking out for them, and whenever they’re genuinely upset, his playful attitude disappears and he becomes calm, attentive, and reassuring. 17. and japanese.