Upon breathing in the dense cloud of enveloping smoke, they fainted from the pain.

"Gaah...!"

"Ugh... I, I can't... breathe..."

"S-Someone! The window! Get a window open -- !"

A strongly acidic smog surrounded them.

It was such a thing that simply breathing in it would burn the throat, and simply opening the eyes would cause them to fester.

"This hurts... shit, this hurts, help! Help!

Help me! Someone help me! Anyone -- !"

The frenzied man quickly ran into the leg of a desk and fell clumsily to the floor.

"I... have to get out of here...!"

Get out? But to where? Where could he run?

They themselves had not realized it, but those who tried to escape were deceived by the mist, and simply ran circles around the same place.

- Fate/Apocrypha: Unbirth