A hostage situation breaks out at the academy where Kiki and Kotobuki once attended. The two head to their alma mater, where they reunite with their former teacher, Miya Sakaura. Kiki attempts to negotiate with the hostage-taker but is shot and finds herself in a life-or-death situation! Faced with a critical decision, what will Kotobuki do…!? Meanwhile, Reiji attempts to cross dimensions and head to MultiEarth I5109, but finds himself trapped in the Maque Space...