praytojesus
There is a theory, among many unproven scientific theories, that there is the existence of a parallel universe. England, 1942, a mysterious woman appears and claims to have visited a parallel universe by accident. Everyone shut down her claims. Now, in the present time, where everybody seems to have moved on, history proves that it will always repeat itself. And that's exactly what happens when a young girl from "the other side of the mirror" crosses the boundaries between parallel universes and finds herself in Seoul, South Korea in the year 2025.
Cover is from Pinterest, found by @Luna143127