Kazumi Akiyama

Kazumi Akiyama (秋山 和美 Akiyama Kazumi, also known as Carrie in the Tokyopop version) is Wataru's younger sister. She was Itsuki Takeuchi's first love interest (second in the anime, after Saori). She is an impatient girl that came to Gunma from Saitama to work in her aunt's inn, but left due to being framed by a senior worker. Kazumi appeared in Saitama with Wataru during the Northern Saitama Alliance's races with Project D, then after started spending some time with Itsuki and she reveals she broke up with a working adult man then after she patched up with him again (after he begged for her forgiveness), leaving Itsuki heartbroken.