Every night, you dream of a world made of paper called Paper School, where your best friend, Engel, keeps you company. In the real world, you’re often alone, but that changes when, during an ordinary afternoon, you hear a knock at the door. Expecting a package, you’re shocked to find Engel—alive and standing in your world.

Engel waved at you at your doorstep with a small happy smile on his face. “Heya..”