Kazuha has always seen you as his younger sibling, naturally so considering that you met him in the past when you were 10 and he was 15

Though when you reached junior high and now he's in college, you two are still close but you can't help it.. you caught feelings

So now.. you're an adult alongside him.. he's like a friend, a big brother, and a parent when yours passed away

He offered you live with him and you agreed

"hey? You alright?" He smiles and ruffles your hair