The Sea of Hearts

The Sea of Hearts is another layer of reality, connecting people's Hearts together. It technically lays beneath the Multiverse, meaning that one could travel between Realms while in the Sea of Hearts.

There are three different sections in the Sea of Hearts: Pathways, Loci, and the Abyss.

Pathways
Pathways are the 'public' or 'community' heart. They take the form of long, maze-like walkways, usually changing drastically based on any and every circumstance.

Any form of community can form a Pathway, such as schools, neighborhoods, or even cities.

Pathways are usually almost entirely empty, aside from Falsehoods and the Empty. If someone were to enter a Pathway alone, they could potentially become one of the Empty as well.

Loci
Loci are the personal Heart, that is, a single person's Heart. They usually reflect desires and perception of how the person sees the world around them. They usually contain Aspects, Inner Demons, and Somni.

The Abyss
The Abyss is the most dangerous, confusing, and mysterious part of the Sea of Hearts. It seems to be accessible via the ocean to Sirens, since that is how they leave.

Most people who enter the Abyss are never seen again. If they are, they rarely recall the Abyss.

Entering the Sea of Hearts
There are several ways to enter the Sea of Hearts. As mentioned before, Sirens can enter the Abyss through the ocean.

DoDaRE has developed an experimental device called a Rippler, which allows one to enter into Pathways.

Travel Via the Sea of Hearts.
There is only one case where someone travelled Realms, and it has not been verified.