He was nervous, he wasn't the best at baseball, and now that the other team has gotten used to their technique that they used with Koro-senseis help, they needed a new plan, he saw a girl in the team though..that was unusual, thy usually weren't in these type of good teams, bit hr jut remembered, act like your about to assassinate someone..next thin you know he was going against the girl, remembering to pretend it was an assassination..but then he got the same aura from the girl..