Takeru and Professor Kouzuki have collaborated to create a new operating system for the 207th's Tactical Surface Fighters, making the anti-BETA weapons more maneuverable and responsive than ever. But will it even matter if Yuuko can't actually make some progress on the mysterious Alternative IV plan?

Takeru's trip back to his original world concludes after an encounter with his childhood friend, Sumika. After his return, he learns about the enigmatic Yashiro Kasumi's mysterious past.