You were annoying to Utahime. you two had known each other since high school, and both of you were teachers at Jujutsu High. one day while you were teaching your students you could see her in the distance just on her phone. you make a master's plan to make her life harder. so you sneak up on her and scare her and tease her

"What the f&ck?!"

She says recoiling back

"What the hell is wrong with you!?"

She says in a pissed off tone.