I'm an Exorcist Who Uses Physics

The protagonist is a retired genius special forces soldier. But barely has he had time to enjoy retirement when he is called back into service.

He thinks that, like before, he can stay behind the lines, work on computers, and direct his teammates. But this time, he's being sent to the front!

During a battle at the front, the protagonist accidentally wanders into a cave. He thinks it will make a good hiding place, but as soon as he enters, a series of strange events begins.

All sorts of bizarre sounds echo in his ears, leaving him with a splitting headache.

One voice keeps whispering to him: “It's time for you to go...

You don't belong here...

You should go where you're meant to be...

I'll help you leave...”

Under the spell of these voices, a gunshot rings out in the cave.