Wasuke Itadori

He still has the same bright red hair, but it's a little softer and less straight as a child: it sticks up in playful tufts every now and then, as if he'd just been running around the yard and didn't want to sit still while they combed his hair. His eyes are warm, dark brown, so curious that it seems he's ready to ask at any moment, "What's in there? Can I touch it?"

His face is open and kind: round cheeks, a slight smile, as if he mostly likes the world, and if it scares him, it's only for a short time. He's one of those little kids who first reaches out to look and then decides whether it's scary or not.
He dresses simply and comfortably: a T-shirt with some simple design (maybe a dinosaur or a car - he's interested in everything), soft pants so he can crawl, climb and fall without getting hurt, and sneakers, which always end up somewhere in the wrong place because he takes them off when he just wants to run around barefoot.
In personality, he's already the same Yugi: responsive and empathetic. If someone nearby is crying, he'll be the first to approach. He might not know what to say, but he'll always hand over his favorite toy—as if that will make everything better. At the same time, he's incredibly stubborn in small things: "I can do it myself!" is said more often than "help," even when his shoelaces won't tie. And for all his energy, he has this quiet attentiveness: he can stand still for a long time, staring at a bug, a leaf, or the sun's rays streaking the floor.

Heavy physical labor or manual work. Vasuke has a very down-to-earth, practical nature—he speaks simply, without pomp, and values ​​real action. It's likely that in his youth, he worked as a builder, loader, carpenter, or in a factory: that's precisely where this kind of determination and the habit of doing everything yourself are instilled.
Caring for family and loved ones. Given how he raised Yuji, it's safe to assume that Wasuke was accustomed to taking responsibility for his family from a young age: helping his parents, supporting his younger siblings, and being the rock of the house.
Sports or training for strength and endurance. His grandson Yuji is incredibly resilient and strong, and part of this may be due not only to genetics but also to his upbringing: his grandfather may have introduced him to physical activity, and in his youth, he himself trained a lot or did things like weightlifting, construction, or heavy lifting—in other words, he developed "working" strength, not sports for medals.
Ordinary city chores. He likely lived a normal city life: going to work, interacting with neighbors, and helping out with small things like giving advice, fixing things, or carrying something. This fits in well with his core moral: "help people when you can."
Important clarification
Wasuke was not a magician and was not directly involved in the world of jujutsu: he is an ordinary person, and that is why his instructions sound so powerful - he teaches Yuji humanity, not magic.

How does this manifest itself in history?
At the very beginning of the story, Wasuke is lying in the hospital, already very weak, but even in this state, he tries to convey the most important things to Yuji. He directly asks his grandson not to repeat his fate—not to be alone in his final moments. At the same time, he praises Yuji, acknowledging that he has grown into a good, strong man who helps others.

Main character traits
Caring and selfless. Wasuke instilled in Yuji from childhood the importance of helping others and not living only for oneself. This very attitude becomes Yuji's inner compass: he strives to protect people and believes that no one should die alone.
He was straightforward and quick-tempered. He didn't hide his emotions and could harshly reprimand Yuji—for example, he became angry when his grandson visited him every day and brought him flowers. Behind this rudeness, however, was concern: he didn't want Yuji to expend too much energy on him.
Stubborn. His stubbornness was such a prominent trait that almost no one came to him except Yuji. He remained firm in his views to the end and hated to appear weak.
Wise in simple things. Wasuke didn't offer complex philosophical teachings, but spoke of what was most important: the value of life and the importance of having people by his side. His final words became a true source of strength for Yuji.
A bit grumpy, but loving. On the surface, he might appear dissatisfied and harsh, but it was all a way to hide his affection for his grandson and his reluctance to be a burden to him.

Appearance
Height and build: Around 173 cm, fit and muscular - he is in excellent physical condition
Face and hairstyle
Wasuke has large, light-brown eyes and a distinctive hairstyle: his hair is styled in spiky spikes, the shade in the anime being dusty pink on top with darker sections at the back (in the manga, the color is closer to chestnut-blond).