Bab 81: What is this?!

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As Gustav went into his Inner World, the Planet's Will remained within the crystal, waiting for him to come back.

After fusing her Soul Records with Gustav's Supreme Summoner System, she was able to see part of the powers within his System, and noticed that he acquired new functions, which included a self-contained world inside of a different space…

It was a very intriguing power, and she didn't know how it exactly came to be. But quickly realized that the "space" where Gustav had gone was here, it was in between the endless layers of space known as Spatial Layers.

Spatial Layers were a transcendental piece of the fabric of reality, alongside the Time River, which flowed freely across all the universes.