Grabmonsters Snappy the Short Stack Grabgriffin and Eyya the Extra Yang Grabraptor learn their pancake grabbing rules. Sometimes they can cooperatively eat up a pancake arrangement completely, sometimes not. At the end, you know enough to tell Who is the Foo, showing you have learned the disappearance arithmetic (boundary mathematics). First in the Zang-fu Mathical Series in Disappearance Calculus.