I Built Kasukabe City to Fight the Demons!

I, Nohara Shunsuke, discovered that my girlfriend, Ya-chan, is the eldest daughter of a super, top-tier, invincible conglomerate. I thought I’d be living off her for the rest of my life. Then you tell me her family is actually a hidden guardian clan that protects reality by holding back eight million demons and gods? Wait, their way of resisting the demons and gods is to create a special world to trap them? And the more detailed the world they create, the stronger it becomes? Nohara Shunsuke thought of all the anime from his previous life. Creating a world didn’t seem all that difficult... And his girlfriend’s family was on the brink of collapse, facing bankruptcy. All they could do was scrape together their last savings to create a world on the side of reality and fend off the demons and gods. Nohara Shunsuke remembered a classic anime, starring a little brat notorious for being devious to the extreme... In that show, all the monsters and demons who appeared ended up getting the worst of it at the hands of that little brat! Then it’s decided: Kasukabe City from Crayon Shin-chan, deploy! That’s what Nohara Shunsuke declared.