Kihara Byouri used that chance to slam a fist over above Kihara Kagun.
The containers were crushed.
With the sound of an impact, Kihara Kagun was smashed together with the containers he was standing on.
He was definitely dead.

[...]

Appearing there was Kihara Kagun standing below. He looked up at Kihara Byouri from below as he said that.
There was no sign of injury at all.
There were no signs of bleeding.

Toaru Majutsu no Index New Testament vol.4 main.31