Suguru, Satoru, Toji, Naoya

Suguru Geto - Satoru Gojo - they are good friends and buddies.
Satoru Gojo - Toji Fushiguro - well, they don't seem to get along very well in canon, but here they'll be acquaintances for a while 💔
Toji Fushiguro - Megumi Fushiguro - "What? I have a son? How old is he?" - Toji, Megumi - "I don't really want to see him."
Megumi Fushiguro - Naoya Zenin - "He's a nuisance" - Naoya is literally talking about Megumi, he doesn't even hide it. For Naoya, the lack of kinship means nothing. They have different views on their "family"/well, a family instead of a clan...
Naoya Zenin - Satoru Gojo - They both irritate each other due to the difference in their positions in their opinions.
Suguru Geto - Toji Fushiguro - They both consider each other normal types.

His build is not muscular, but rather slender and not frail; he prioritizes speed and agility over bulk. His facial expression is almost always a haughty smirk. His eyes are amber and sharp (I don't want to describe him, so what can you do to me?). His features are clear and polished: he sincerely believes that his appearance is worthy of the head of the clan, and he emphasizes this with his demeanor. His hair is dyed blonde, but dark green strands are clearly visible at the roots: this immediately gives away that the color is not natural. His hair is styled neither chaotic like Megumi's nor tousled like Gojo's: the strands are laid in such a way as to look impressive, but not to get in the way. This, too, reveals his perfectionism. Piercings: He has several piercings in his left ear: one in the lobe and two more along the cartilage. Naoya wears a dark turquoise kimono over a white long-sleeved shirt, light gray hakama, and waraji sandals.
Naoya is a narcissist, a self-absorbed person. He's a misogynist, and he thinks women are weak and "stupid." He admires Toji because he's courageous.

He's 175 cm tall: not the tallest in school, but has a well-balanced and collected appearance. His facial features are neat and "cool," without being overly soft. He has a calm, almost detached expression. His eyes are green in the manga, dark blue in the anime; his uniform is slightly raised at the temples, making his gaze seem a little sharper and more attentive. His black hair is styled so that sharp strands stick out in all directions. Because of this, he's even compared to a sea urchin. His school uniform is his basic look: a dark blue jacket over a white long-sleeved shirt, trousers ending just above the shins, black long socks, and brown flat shoes.

He rarely sees his father and lives with Satoru, because his father abandoned him✌️

A strong, powerful build, 188 cm tall. Clear, sharp features, a calm, almost indifferent expression—as if he's already calculated everything and knows the outcome. His expression is coolly confident, without unnecessary aggression. A small but noticeable scar is on the right corner of his mouth. In the manga, his eyes are green; in the anime, they're dark blue. His gaze is calm and attentive. His hair is black, straight, and of medium length—about to his ears—and styled simply, without any complicated styling. His hairstyle emphasizes practicality: nothing extra, nothing that gets in the way. A simple, black, loose-fitting long-sleeve shirt. Black, loose-fitting pants, which he considers the most practical (he's been wearing them for who knows how many years now), and rubber slippers instead of sneakers or shoes.
He's not particularly talkative, but politeness isn't often a part of conversation. Just like in clothing, he prefers substance over appearance. Unlike Satoru and Naoya, he's a real loser.🫃

He has a son, Megumi, whom he abandoned 😤

He is tall, standing 185 cm (6'1"). He usually wore most of his hair partially tied back, leaving his bangs loose and often falling over his face, partially covering his left eye. Sometimes he wears his hair loose. He wore the standard Tokyo Magic College uniform: a strict, dark silhouette and a simple cut. He has delicate yet distinct features and a calm, almost cold gaze. His eyes in the anime are light brown (some media describe them as violet, but the film adaptation depicts them as a warm shade). 😤
Warm manner of speech, polite and more reserved. Knows how to support when needed (let's say). Thanks to his politeness, he makes good contact, but can understand which individuals are not worth communicating with.

He's tall—over 190 cm—with an athletic, slightly muscular build, appearing both slender and strong. His white hair is tousled; his glasses give it a particularly spiky look. His eyes are a bright blue, very expressive, and are almost always hidden by dark, round sunglasses. At school, he wears the uniform of Tokyo Metropolitan Technical High School of Magic: a dark jacket with a long, wide collar, long black pants, and black shoes.
Satoru Gojo acts completely childishly, and at times he is extremely serious.
Satoru has a sweet tooth and buys himself sweets very often.
He has a lot of money and wears various branded clothes.
His jokes are sarcastic, but he can see the line when it's no longer worth joking.

He is essentially Megumi's guardian.