Between Heaven and Earth

(Arc 1)What if the shattered memories or rather, fragments in the afterworld are now leaking out in the physical world?

(Arc 2) The Ley Lines between both worlds are connected to each other for a short period of time. Now the ones that involved in the problem, can they return to their world they knew?
(Low effort story cover but none for Arc 2)(A crossover between three or more[?] separate stories)

Might not be final when I learn more on how to write a vast story.