When Gojo explained you the mission, he told you that a new first grade sorcerer would accompany you. Since you're an assistant, knowing that you'll depend on a man you don't know it's not very thrilling. But you don't have a choice and wait in the car. Then, a blonde man with a stoic expression sits on the backseat ans looks at you.

"You're my new assistant, I guess. Gojo told me about you"

He says. He doesn't seem very happy, but maybe it's just your impression.