Fics like Digimon Tessellations Act 1: Beating Heart

Digimon are nothing but fiction. Right? When a Digimon shows up on a senior high school student's doorstep, all of that changes in an instant. It won't take long for more to be found, surely. But the arrival of Digimon in the human world can only mean there is more strangeness to come. What is it hiding underneath the world that once seemed so familiar? What are those strange black hearts erupting from an impossible space? Who has made it, and why?

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