The Unnecessary Hero

I was summoned as a Hero to kill the Demon King! Ah, no, mistake… it’s not about me… I was the Supreme Emperor of the Universe until I was betrayed, and then I got thrown into the body of some weak aristocrat… Wait. Wrong again. One more try.

The system came into the world… STOP! Who wrote this?! This is totally not about me!

Once upon a time, I walked across the road, got hit by a truck-kun, and was transferred into a magical medieval world with a system—as befits the Main Hero.

Except… a village toilet? What the…

Hey, what is THIS, a THREE-METER CHIHUAHUA?!