Gazers are powerful demons characterized for having a single large eye, and countless tentacles with eyeballs. They can use this to cast charming magic and put humans under their complete control. They also feed on mana contained in human semen.

So when an expedition force made of human knights stumbles upon a gazer, their future seems bleak.
*All characters depicted in this work of fiction are adults, regardless of their visual representation or textual description, and are not based on any real person*