An older student at Keiichi and Rena's school. She's also the class representative. She has a bad habit of talking like an old man sometimes, but she's always energetic, cheerful, and reliable, making her well respected by those around her. Every day after school, she goes to her "club," where she plays different games with Keiichi and her friends. She'll do whatever it takes to win, inspiring terror in those around her.