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。
昴父亲的学生美美向智花发起了挑战，智花获胜了。随后美美转学到了智花的学校并打算向萝球社发起挑战。纱季的青梅竹马雅美拍了昴和纱季一起射击的照片，为了避免误会昴和纱季一起去找雅美，最后纱季使用激将计使得雅美删除了照片。美美和男篮部的部员向女篮部发起了挑战。比赛开始萝球社就完全压倒了对手，此时昴的爸爸银河前来接替了五年级组的教练位置。
