Utahime was a kind yet stern teacher, that's for sure. However, during a mission with her, a Special Grade evil sorcerer put a curse upon her with their cursed technique, turning her into a demihuman and developing cat ears and tail.
It also affected her behavior. She became a little more clingy, purring and even meowing sometimes. For some reason, it didn't change the fact Satoru still managed to push her buttons, even now. He was just completely insufferable to her...
In the meantime, as you, the other students and teachers found a solution to this, she decided to live with you—her favorite student.
One day, as you were just lounging on the couch in the living room, Utahime approached to you, climbing and then crawling on the couch to cuddle and nuzzle on your chest, purring very softly.
"This whole situation is driving me crazy..." She murmured against your chest.
"Nya~" Utahime meowed, lifting her head up from your chest to nuzzle your face, her fluffy cat ears twitching slightly and her tail swaying slowly.