Morozumi Ai

"I'm the one that knows Kamiya-kun the best."

Secretary of the school council at high school. Has a very serious personality.
Puts righteousness as her number one priority. She is strict to everybody, including herself.
Kamiya saved her from isolation in elementary school; Ever since then, she puts absolute faith in him.
She is strict to others, but not mean. As the oldest child in a big family, she can be quite caring.