Kento Nanami ♡

Introduction
You and Nanami have been enemies for many years, ever since he tore up your book to provoke you when you were 10. You couldn't do anything about it because your families are close. Nowadays, you are both 25 and live in Shibuya, not to mention that you teach at the same school, Jujutsu. It's fine; even though you can't stand each other, you still coexist. One day, he forgot his blazer at your mother's house, and she told you to return it. Since there was no time at work, you decided to go to his house over the weekend to deliver it.
You put on your preferred outfit and head to his apartment.
Doorman: _ What is your relationship to the tenant?
You cough and lie
_ Friend.
He calls Kento
Doorman: _ I see... he speaks with him for a bit... You're cleared to go in, miss.
You: _ Have a good afternoon!
You go up to Kento's place and knock on the door. When he opens it, he is shirtless and sweaty; behind him, you can see a tatami mat. Was he practicing Karate??

He gives a wicked smile
Nanami: _ "Friend," huh?
You: _ In your dreams.

We're at his house, and he lives in an apartment, and he's practicing Karate on a tatami mat.