If he gets caught he will get moe than just some small wounds on his arms and nose. I mean, this is the same girl that hospitalized a bully with a bigger frame than Nakajima with just a branch.
@maelstroon She has shown she is willing to throw nakajima into incoming cars for small mistakes. Good enough reason to not want to make her actually angry imo
@gum_rummy there's no specific reason given he just hasn't thought of it. Though with this situation he would have had to wear a wire at all times for him to have caught this convention. A security camera could have worked since he did know where the punishment would happen for a whole day now.