Die D.E.M. setzt ihre Pläne in die Tat um und attackiert Touka. Shidou kann eingreifen, doch wird es ihm ein weiteres Mal gelingen, Touka zu retten? Währenddessen ist die Fraxinus durch Luftangriffe gefährdet. Shidou könnte die Hilfe der Zwillinge Yuzuru und Kaguya gut gebrauchen, doch dafür müssten diese erst ihre Differenzen klären.
The woman stalking Tohka and Shido before, Ellen, finally reveals her true colors and orders a pack of mechs called Bandersnatch units after Tohka in an attempt to capture her. During the clash, Tohka gets incapacitated and captured only for Shido to call upon her sword to break the Bandersnatch off her. Meanwhile, Kannazuki and his crew on board the Fraxinus gets attacked by an enemy airship. Kannazuki launches a counterattack after deflecting several shots, leading to a full-scale dogfight between the two ships. Back at Shido's battle, Ellen falls down into a pit trap (oddly enough) dug by Ai, Mai, and Mii allowing Shido and Tohka to escape. Running to Kaguya and Yuzuru, he summons Tohka's power to intervene the duel and convinces both the girls to forget about becoming Yamai and focus on enjoying their lives together. Noticing the airship that attacked the Fraxinus, the twins combine their powers and eviscerate the ship with one massive blast. After the incident, Shido successfully seals the Yamai twins' powers, unfortunately stripping them of their clothes just as Tohka arrives. Meanwhile, Kotori learns from a strange man that Shido has manifested a spirit's power and that she might have to kill Shido if the situation worsens.
Mentre i membri della Ratatoskr sono sotto attacco da parte di una nave della DEM, Shido e Tohka vengono circondati da Ellen e dai Bandersnatch.
琴里不在の中、ＤＥＭ社の空中艦から攻撃を受けた＜フラクシナス＞。
地上では、士道の叫びも虚しく、耶倶矢と夕弦の闘いは続く……。
さらに十香と士道にも、ＤＥＭ社の魔手が――。
至るところで絶体絶命！ 八方塞がりの窮地に立たされた士道に次の一手はあるのか！？
絶望に打ちひしがれる中、その目に映ったものは――。
修学旅行編、ついに完結！
La mujer que acecha a Tohka y Shido antes, Ellen, finalmente revela sus verdaderos colores y ordena un paquete de mechs llamados unidades Bandersnatch después de Tohka en un intento de capturarla. Durante el choque, Tohka queda incapacitado y capturado solo para que Shido invoque su espada para romper el Bandersnatch.
