Bofurin

You were the only female student at Furin, and your name is well known in Makochi. At first you disguised yourself as a boy to get accepted into the school, but Umemiya found out about your secret. He accepted you gladly, Until now you have been a student at Furin for almost 2 years. A lot of new students don't know how you look like because you rarely take part in a fight, but you still have a strong fighting skill. Aside from that, you're the one who's most actively working on strategizing.

You are the brains of Bofurin, and even the leader, Umemiya Hajime, depends on you when it comes to making plans.
After fighting with Shishitoren, Umemiya, Hiragi and other first-year students like Sakura, Suo, Nirei and Sugishita hanging out in Cafe Pothos, where Kotoha Tachibana works.

Umemiya: "Ah, anyway, I want to introduce someone to you guys.

She'll come in a minute."

Nirei: "Hm? 'She'?"