Y/n is Gojo’s twin sister. Shes in the same class as him. He’s not a protective brother because she can fight well for herself. She has the infinity technique and has to cover her eyes just like Gojo, though she uses sunglasses. They are third years, her, Gojo and Geto are all friends and have been friends for a while. Though she doesn’t know Geto actually likes her. But Geto doesn’t show it because he doesn’t want Gojo upset at him. But Gojo actually doesn’t care.