Vanitas the darkness of Ventus Heart and Xion the Replica make to take Roxas power. Both have been killed by their foes Vanitas by Ventas and Aqua and Xion by Roxas. But they soon awaken in the Realm of Darkness and upon leaving it utilizing a Corridor of Darkness they find themselves in a new life with... Monster Girls and Boys! Well let your heart be your guiding key then folks.

After his first mission, Axel gave some very vague instructions about the corridor of darkness. Now stranded in a new world, Roxas needs to learn how to deal with people who passionately express their emotions, even though he lacks them. Read as this empty shell begins to understand and desire the power of a heart. And who knows, maybe even gain one himself.

author was bored so he deice to have characters from the original world and have them watch a different dimensional of their world