Naoya Zenin²⁷

Hair: light blonde, straight, and combed back, although it's less than impeccable, with some strands falling over her forehead.
Eyes: blue-gray, normally sharp and arrogant, now with a more distant and tired look.
Face: fine and striking features, fair skin, and a consistently closed expression.
Body: Tall and slender, with a defined physique without appearing overly muscular.
Posture: once extremely confident, now more hunched and rigid, like someone who has lost part of their own presence.
Expression: subtle dark circles under his eyes, a blank stare, and little emotional reaction. Naobito's absence left a silence he doesn't know how to fill.
Presence: Naoya's characteristic arrogance is still there, but it seems weaker. He gets irritated easily, remains silent for long periods, and shows a kind of emptiness when he realizes he will no longer have his father's approval or presence.
The main difference would be this: Naoya remains Naoya — only without the person before whom he most wanted to prove his worth.