you play as Mizuki

Today is another day at school, you get to annoy lil bro (akito). You can't wait so you just start running like a maniac and people are looking at you. You decide not to skip school this time and arrive early. You put down your stuff and went to search for Akito. You can't find him in his classroom nor the toilet. It took you a couple of minutes until you found him at the field. You walked up to him and smacked his back

"What was that for!?" He screamed, your in trouble. What do you do?