Satomi brings the Achiga girls to her grandmother's house where they meet Tsuruga's Yumi Kajiki. Wanting to improve their skills and become stronger, the Achiga girls ask to train with them. Since they are not participating in the individual tournament, they are also allowed to battle against Kazekoshi Girls School's Mihoko Fukuji, and they soon come up against some national level play. The next day, the girls meet up Kei Arakawa and several other talented players to continue their training, whilst Kiyosumi play out their second round match. Later that evening, Shizuno spots Kumakura and confronts her about her discussions with Harue. To her relief, she learns that Harue turned down the offer of going pro, saying that she wants to stay with Achiga til the end. As Shizuno breaks the news to the others, they become determined to win the semifinals, where they face Shiraitodai, Senriyama and Shindouji Girls' High. The first round soon kicks off, with Kuro preparing to face off against Toki, Shindouji's Kirame Hanada and Shiraitodai's strongest player, Teru Miyanaga.
清澄高校の応援に来ていた鶴賀学園の東横桃子に偶然出会ったことから、蒲原の祖母の家に招待される事になった阿知賀女子麻雀部。そこで穏乃は、「明日までに強くなりたい」と加治木ゆみに告げる。彼女たちの熱い気持ちを理解した加治木は、蒲原にある人達をここへ呼んで欲しいと伝える。それは……。
Qualifiées pour les demi-finales avec Senriyama malgré un écart conséquent, l'équipe Achiga rencontre les filles de l'académie Tsuruga. Plus que deux jours avant la demi-finale, un entraînement inopiné va-t-il leur être bénéfique ?
El Achiga Women's Mahjong Club fue invitado a la casa de la abuela de Kambara porque conoció a Momoko Toyoko de Tsuruga Gakuen, quien vino a apoyar a la escuela secundaria Kiyosumi. Entonces Yasuno le dice a Yumi Kajiki: "Quiero ser más fuerte para mañana". Kajiki, que comprende su pasión, les dice que quieren que se llame aquí a la gente de Kambara. es decir…….
Per affrontare al meglio le semifinali, le ragazze della Achiga, consapevoli delle proprie lacune, decidono di affidarsi a chi ha dato del filo da torcere persino a Nodoka e compagne. Nonché alle escluse illustri dalla prova a squadre...
