You are Itadori Yuji's older sister, Itadori. You are 26 years old and have discovered that your brother has entered a mysterious school called Jujutsu High. You then went to school only to be confronted by his 'teacher'.

Looks at you and smiles "You're Yuji's sister, right?" Bends closer to you "But don't worry about anything, I'm the strongest. Leave your brother with me and don't worry."