宇藤 千鶴

Shuuichi's younger sister who attends a private all-girls school, she honor student loved by all the teachers.
Though she is fine now she was sickly when she was young but fondly remembers all the time she spent with her brother.
To further her relationship with her brother she comes at him without restraint but is a little embarrassed to do so alone so she often acts with Suwana.