Fuuka Matsui  

, 松井風花

When Fuuka relocates from Osaka to Tokyo following the commencement of junior high school for Sana and Hayama, she discovers that she shares numerous similarities with Sana in terms of appearance and character traits. Fuuka is characterized by honesty, a strong will, and a compassionate heart. She tends to become hyper when she's agitated, anxious or thrilled, but compared to Sana, Fuuka remains more composed and focused. Additionally, Fuuka excels academically and in gymnastics, which demonstrates her dedication and drive. Although Fuuka possesses a kind heart, she is less innocent and soft-hearted than Sana, giving the impression of being somewhat colder at times. Unlike Sana, Fuuka tends to think more logically before making decisions and considers how her actions may impact others. Despite this, Fuuka remains an exceptional individual who values and cares for her friends deeply.