Well, lightskin cartoons often feature characters with smoother skin tones and a kind of dreamy or fairy-tale-like atmosphere. They might also use more pastel colors to create a gentle and inviting visual effect.
Well, typically these cartoons show lightskin baby boys with soft, curly hair and a friendly demeanor. Their movements are usually gentle and their features are drawn to be very endearing. Also, they might be in various settings like a playground or a cozy home.
Toge Inumaki is important too. His special cursed speech ability makes him stand out. Also, the principal of the school, Masamichi Yaga, is likely to be important as he is in a position of authority and has an influence on Gojo and the other students. There could be other characters like the members of different clans that also play roles in the complex web of the story.