So, this is an old idea of mine that I've been trying to get off the ground for a while now. If you are interested let me know

For years, a mysterious forest would appear just outside a kingdom or village. For weeks on end, it would stay there and people from that kingdom or village would disappear, never to be seen again. Then, the forest would vanish and reappear elsewhere. Many warriors would venture into this forest to seek out and stop whatever causes it to do this, but no one returns and the disappearances increase.
The kingdom of Camica is the strongest kingdom there is. It is home to the greatest warriors ever known and has yet to be affected by the forest. But now is the time. The forest has reappeared once again, targeting Camica now. To combat this force, the king has appointed Muse A, the strongest in the Royal guard, to venture into the forest and investigate. Upon entering, however, Muse A discovers that this is not just a forest, but the gateway to an entirely different realm. One that seems to only be home to many strange and mystical creatures and plant life. This is The Shadow Realm.

In this strange world, Muse A comes across Muse B, who seems to be the only human inhabitant in the Shadow Realm. Thinking they may be a clue to the disappearances this place causes, Muse A regularly visits the realm to learn more about it and try to get Muse B to reveal what they may be doing. However, after one of these many visits, Muse A starts to have strange hallucinations and dreams, all of them involving a strange masked figure. One of these dreams in particular, has the masked figure killing Muse B and then Muse A. After yet another visit Muse A discovers the dark secrets of not just this realm, but also Muse B.