After Tomoka has a fun match against the girl, Mimi Balguerie, Subaru's father, Ginga, appears, who reveals Mimi is his basketball pupil who will be staying with them for a while. The next day, after Mimi transfers into Kagetsu's class at Tomoka's school, she appears before Takenaka, saying she wants to form her own team so she can have a rematch with Tomoka. Meanwhile, Subaru shows some concern when Saki informs him that her childhood friend, Masami Fujii, took a picture of them together at the festival. The two go to talk to Masumi, who had started disliking her due to a family business rivalry, persuading her to delete the photo after pointing out it won't help her business. Takenaka eventually manages to form a team of fifth years, consisting of Mimi, Kagetsu, Masumi and his two sisters, Tsubaki and Hiiragi, challenging Tomoka's team for gym usage. As the match gets underway, Mimi's team struggles as they are too focused on individual rivalries as opposed to working as a team. Half-way through the match, Ginga shows up, announcing he will act as the fifth years' manager for the day.
智花たちの前に突然現れたフランス人の少女、ミミ・バルゲリー。その場でバスケ勝負を挑まれた智花は1on1で相手をする。その腕前はかなりのもので、智花は辛うじて勝った。なんとミミは、発掘調査で海外に行っていた昴の父・銀河の知人の娘で、彼と一緒に日本にやって来たのだという。しかもバスケが得意な銀河から直接コーチを受けていたのだ。智花や昴たちとすぐに打ち解けたミミは、慧心学園の初等部5年生として転校してきた。そしてクラスメイトになったひなたの妹・かげつと、男バスに道場破りよろしく乗り込んできた。驚く夏陽に、ミミはあくまで智花とバスケで勝負がしたいのだという。それを聞いた夏陽はミミにある助言をする。
