“Innocentius!”

As Kamijou prepared himself, a spiral of flame appeared in front of him.

The giant flame took on the form of a person and then spread out its arms to act as a shield against the pillar of light.

[...]

Index swung her head around, pillar of light and all.

However, Innocentius moved to protect Kamijou at the same time. The light and flames continued to eat into each other in an extended conflict of destruction and regeneration.

[...]

The pillar of light’s color turned from pure white to crimson.

Innocentius’s regeneration speed visibly slowed and the pillar of light pushed forward.

Toaru Majutsu no Index vol.1 ch.4