There's a lot to cover before joining the group, so to get started, please check out all these pages that will assist you in explaining how the Real World and Fantasy World work, and how we're able to swap between the two!
There are two worlds, set across parallel universes from one another. Those who share souls across universes share the same fate. If one dies, the other will as well. One of the worlds is known as the Fantasy World, and it unfortunately developed a deadly virus known as the Darkness. The only way to stop the virus, is with the help of a soul from the other universe, the real world.
Congratulations! Your character has been accepted by King Arthur to receive the Mana Tablet! This is your main tool to swap with your counterpart from the Real World. You'll notice that upon booting it up, you've got a couple of things to check out! Let's go over one by one what each feature provides.