“B-but so what? It doesn’t matter if this light or haze or whatever surrounds me. It’s not like it hurts or-…”

His entire body froze before he could finish with “anything”.

He saw Tsuchimikado Maika who merely looked puzzled.

She clearly had a weapon through her chest, but she felt no pain or suffering. A lack of subjective symptoms did not mean nothing was wrong.

[...]

“So what happens to me with this stuff around me…?”

“I don’t know. But the more it happens, the more powerful and thicker it will grow. You can punch through a single piece of paper with a fingertip, but enough layers of paper can stop a bullet.”

Kamijou pictured himself being forced to wear 10 or even 100 layers of clothing. Just how much weight and pain would they bring? It was possible he would be rendered immobile.

Toaru Majutsu no Index New Testament vol.18 ch.2 pt.2