Makoto is shaken by the revelation that the hero he meets on the battlefield is his high school senior, Hibiki Otonashi. Unable to dwell on it, Makoto enters a battle with Io to whom he suggests the demons retreat, in order to avoid a pointless battle.
The cost is... a reduction of 
your maximum mana, I'd say.
‫التكلفة هي... تقليل الحد الأقصى من المانا خاصتك.
Der Preis ist … die Reduzierung
deiner maximalen magischen Kraft.
Te costará…
una reducción de tu maná máximo.
Te costará…
una reducción de tu maná máximo.
Le prix sera la réduction
de ton mana maximal.
Il prezzo da pagare
O custo é... a redução
da sua mana máxima.
Платой будет…
пожалуй, снижение твоего максимума маны.
แต่ราคาที่ต้องจ่ายก็คงจะเป็น