Tsubaki Sakura  

, 佐倉椿

Yukinos has a friend named Tsubaki, who is an accomplished athlete with a tomboyish personality. However, her past comes back to haunt her when she encounters Tonami Takefumi, someone from her past whom she initially cannot recognize due to his dramatic transformation during the three years he was away. Taking advantage of this situation, Takefumi seeks revenge against Tsubaki.