TPN x DDLC AU. Sayori and Natsuki. Two young teens that grew up together in the same orphanage: Gracefield House. They grew up as kids should, happy and free and safe. But when they find out the sinister truth behind the facility, they make a promise to each other: a promise that neither of them will leave each other behind. But when Sayori is next on the list to leave, how far is Natsuki willing to go to save the one she's fallen hopelessly in love with?