“Gungnir!?” shouted Othinus.

“Weren’t you listening? If used right, the 103,000 grimoires in her head contain the possibility to reach the level of a magic god.”

She grabbed the lance that grew from her palm, rested it on her shoulder, and smiled.

“I hear you stole the plans from Brunhild Eiktobel’s head, but there were other ways. …Then again, this isn’t the god’s weapon itself. A god’s weapon can only be used by a god, after all. I fine-tuned it for human use and that twisted its properties a bit.”

[...]

“All I need to do is produce the same phenomenon as the thrown lance, even if just once. It’s a bit presumptuous to call yourself a god just for wielding the power of destruction, but rude as it might be, it should still give me the right to kill a god.”

Kamijou felt as if the world were growing black before his eyes.

He knew the genuine destruction produced by that lance’s surefire strike. That spell would split apart the entire world, gather the whirl of fragments, and create a giant spear tip out of them. The world of man would be destroyed for the convenience of a god and the surging violence would create a nightmarish attack to wash away an individual.

Toaru Majutsu no Index New Testament vol.10 ch.17 pt.2