RTC

In 385/2 Days, Roxas must travel through worlds and complete missions with various members of Organization XII. He completes a mission with Axel, Xion, Saix, ect, and then a Dark Corridor/Dark Portal appears in the place where they first appeared on the world. This is when You can RTC, AKA, Return To the Castle. This brings you back to The World That Never Was/ The Castle That Never Was, in the room with several white chairs to save, advance date, or accept the next mission.