PREVIEW

... or the time being.

The boundary between realms had become vague. I had turned the arena into a dungeon and connected its surroundings to an inter-realm space through teleportation magic. The space between worlds, or inter-realm space, was where the human world and the spirit world intersected, and spirits and demons would come to the human world through this space.

However, there was no oxygen in the inter-realm space, thus, ordinary humans wouldn’t be able to survive there.

...

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