Earlier this month the latest entry into Akira Toriyama's Dragon Ball canon arrived in the April 7th issue of Shonen Jump, officially tying together the creator's most beloved series with his recently completed (and potentially final solo) work Jaco the Galactic Patrolman. Dubbed Dragon Ball Minus, the 16-page tale spells out DB protagonist Goku's alien origins and how his doomed parents sent him to Earth, the planet readers meet him in-progress many years-- and a personality-altering head injury -- later in the pages of the original Dragon Ball manga. The hook here is that the story shows Goku's mother Gine for the first time while cementing that Jaco and Dragon Ball take place in the same universe.
Was this story necessary? Not at all. Will you like it anyway? Totally. It looks great, never takes itself too seriously (or seriously at all!) and feels like Toriyama is merely picking up where he left off.