New Testament: A Certain Magical Index (Shinyaku To Aru Majutsu no Index) 10 (Dengeki Bunko) [Light Novel]

[Machine Translation] In order to save the demon god Othinus, Kamijou Touma has turned the whole world against him. The most powerful people, psychics, and magicians, who had been his reliable allies, all attacked him as "powerful enemies. This battle seemed to be the most hopeless in Kamijo's life, with the lowest probability of survival. In other words, the world Kamijo returned to was just like "that hell. But he would not give in. This time, he was not alone. The way to save Othinus from the whole world. It was to "neutralize the demon god Othinus. In order to change from a demigod back to a human, he needed to take out one of the eyes of the demigod from the "Mimir Fountain" in the old castle in Denmark. Now, the objective has been decided. Kamijou fights. To protect the life and smile of a single girl.

魔神オティヌスを救うため、全世界を敵にまわした上条当麻。今まで頼もしい味方だった、指折りの権力者、超能力者、魔術師、それらすべてが“強敵”として上条に襲いかかってくる。この闘いは、上条の人生の中でも生存確率がもっとも低く、もっとも絶望的だと思われた。...つまり、上条が帰った世界は、まるで『あの地獄』と同じ光景だったのだ。だが彼は屈しない。今度は一人ではなかったから。オティヌスを全世界から救う方法。それは『魔神オティヌスの無力化』だった。魔神から人に戻るためには、デンマークの古城にある『ミミルの泉』から魔神の片目を取り出す必要がある。さあ、目的は決まった。上条は戦う。たった一人の少女の命と笑顔を守るために