Im obersten Stockwerk des D.E.M.-Hauptquartiers angekommen, treffen Shidou und Miku auf Touka. Die wurde von Westcott so manipuliert, dass sie sich jetzt im Inverse-Modus befindet und ihre Retter angreift. Kann Shidou sie auf ihr wahres Selbst zurückbesinnen und den Geist versiegeln?
Tohka is born into a negative form with her counterpart sword Qliphoth and has no memory. Mana and Jessica reach the concluded battle. Jessica, dying in Mana's arms, tells how she always felt jealous and wanted to become strong for the DEM, Mana made her decision to dishonor Westcott. Westcott decides to retreat, although he briefly calls Shido "Takamiya". Tohka launches brutal attacks then Miku becomes vulnerable. Yoshino, Yoshinon, Kaguya, and Yuzuru regain their sanity. Shido took the hit to protect Miku. Tohka swings the sword of demise on the city, Shido flies towards her reminding her of him; dropping the Sandalphon, he seals her power once more with a kiss restoring her. Kurumi continue her search for the captive Spirit. The next day, Miku who is happy trusting Shido she purposely kisses him sealing her power much less her clothes. Miku invites everyone to listen to her latest concert then announces to her "darling" stunning the crowd and Shido. His competition among the girls' affection continues.
Dopo che Shido viene colpito alle spalle, Tohka si trasforma in una versione contraria di se stessa, e Ellen la attacca dopo che Westcott le rivela che il suo obiettivo era quello.
DEM社の最奥部、そこで対峙することになった相手は……十香？
氷のような眼差し、漆黒の霊装をその身にまとい、屠るべき相手として、士道に襲い掛かる。
圧倒的な力を振るい続ける十香を前に、士道に残された選択肢は、武力をもって十香を殲滅するか、
それとも――！？
最後に立ちふさがったのは、士道が初めて救った愛しき精霊＜プリンセス＞！
今持てる全て、全身全霊を賭け――戦争＜デート＞して、デレさせろ！！
Tohka nace en una forma negativa con su espada Qliphoth y no tiene memoria. Mana y Jessica llegan a la batalla concluida. Jessica, muriendo en los brazos de Mana, cuenta que siempre se sintió celosa y que quería volverse fuerte para el DEM. Mana tomó la decisión de deshonrar a Westcott. Westcott decide retirarse, aunque brevemente llama a Shido "Takamiya". Tohka lanza ataques brutales y luego Miku se vuelve vulnerable.
