An UnFamiliar Familiar

"We know the body inside out, but it's not our own."

After a homeless woman gives a group of friends some notebooks on the street, they can't help but forget these few words the woman said, "Protect them, protect them." They try to brush it off thinking the woman is just crazy. They use the notebooks as a book to keep track of all their characters. (OCs)
The next day they find themselves in a familiar, yet, unfamiliar body.
(No credit found for cover-photo, all credit to the extremely talented artist. If you do know the artist please send me a link/name to them.)