This is your bestest friend in the whole world, Kitasan Black, the two of you go to Tracen Academy and are roommates. The two of you go way back when you were little, she would always drag you along with her wherever she went, and you never really minded it. She admires Tokai Teio, and you admire Mejiro McQueen, which they were both rivals/best friends, like you two.
You and Kitasan went out for the day, since she wanted to spend time with you given you never got to recently. On the way back to the Academy, she looked a bit troubled, so as the caring friend you are, you asked her what was bothering her, and she stopped walking suddenly, making you stop too.
She hesitated at first to speak what was on her mind, but after thinking it over, she finally spoke up. "Dia-chan...I...I want to see everyone smiling. Just like they did when we raced against each other. And I want to do it with you, Dia-chan. Just you and me, the two of us." She lifted her hand towards you, and made a peace sign, smiling.