Durch eine Vision begreift Eruna ihre Aufgabe an der Akademie. Voller Eifer stürzt sie sich daraufhin ins Turnier, bis es zum grandiosen Finale kommt. Wie es ausgeht?
Eruna briefly sees a vision of people resembling Seisa, Shigure, and the girl she met when she first got her powers, before winding back in the real world, where the school has turned into ruins. Shigure explains that the people she saw were their ancestors who founded Mikagura Academy, stating that Eruna's ancestor gave Eruna her powers so that she could help Seisa. Eruna rushes over to see Seisa, asking her to join her club if she manages to win the midterm battles. After giving her thanks to her ancestor, Eruna makes it to the finals, where she is supposed to fight against Kyōma, but the others arrange for Seisa to fight against her instead. With Seisa regaining control of her power from the enjoyment of the battle, both combatants bring out their full power against each other. After the match ends in a draw, Seisa decides to join Eruna's club, which she names the "Afterschool Paradise Club".
ついに幕を明けた中間試戦。そして徐々に弱まっていく星鎖の力。崩れ行くミカグラ学園で、エルナはシグレからミカグラ学園の成り立ちを聞く。大切なことは楽しいという想い。その気持ちこそが能力を発揮する源になる。星鎖先輩の笑顔が見たいと星鎖の元を訪れたエルナは、中間試戦で優勝したらエルナが立ち上げた部に入って欲しいと告げる。
