Universe

Overview
The Universe is a basic part of a Multiverse. Each universe has the same story, but in everyone of them, one or more events are different. That can go from the most basic thing (for example, if yesterday you ate sushi, it is possible that in another universe you ate pizza) from the biggest things (for example, Hitler winning WW2). This means that a Multiverse contains a number of universes that is beyond the concept of "infinite universes". Every universe has a fixed position, meaning they can't collide each other.