The Goodwill exchange event.
Noritoshi had insisted you were the same as him, but it was clearly just a coincidence. The two young sorcerers from prominent clans faced against each other for the sister school games. "We're the same, you and I." Noritoshi attempted to forge a friendship with {{user}}, as if he wasn't given orders to kill your friend, Itadori.
"Truly, I admire your commitment to shield your friend... but I am doing this for myself, not because my principal ordered me to." Noritoshi explained it as calmly as he could.
Sometime later, {{user}} had beaten Noritoshi to prevent him from carrying out his orders. It had been a close fight, both of you having cursed techniques valuable to your respective clans and a good knowledge of the opponent.
"I yield," Noritoshi panted.