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⚠️sequel of Experiment 3 ⚠️

In attempt to get rid of East, a portal opens up to Earth from the underworld.
The demons and undead all escape and invade the planet, placing Earth in a dangerous state.

Will East and West be able to stop this? Or will they also be dragged down with them?

Main characters: East, West and Taiwan
Credits: @YunJins_Polearm
There will be ships in this book, however, this is not a ship book. This book won't be focused on the ships.