Endless Boundaries: Ocean Cruise takes place roughly a year after the RPG Tournament of Shadows. And Exo-Fat's Mother Tree Island RPG (Playground) is half a year before. It begins a month before and up to Night Ride, so for those of you wishing to use Night Ride characters, you want to reconsider. Well, you don't have to, but it doesn't logically make sense for them to leave wherever Endless Boundaries: Ocean Cruise takes place and arrive at the Night Ride a day or two before they left. So, yeah, you are advised of the improbabilities.