Tengoku Daimakyou  

Heaven's Great Magical Barrier, 天国大魔境, Heavenly Delusion

The narrative revolves around a young boy named Tokio, who resides within a stunning wall alongside other kids. One day, he gets a message saying "Would you like to step out from the outside?" In this heaven that is falling apart, a group of children embark on an adventure.

Tengoku Daimakyou has been published in English as Heavenly Delusion by Denpa since December 30, 2019.