Buu Eats Buu, A New Majin Attacks!!
The overwhelming rage surging inside Majin Buu triggers an unprecedented event, causing his very essence to fracture and give rise to a sinister new manifestation of his power. A dark conflict erupts over the countryside, leading to a catastrophic shift in the monster's biology and bringing forth a far more calculated and dangerous threat. With this lethal new adversary immediately setting its sights on Kami's Lookout, Piccolo is forced to improvise a desperate delaying tactic to buy the young Saiyans precious time.
Aired 21/12/2014EP 37 - Buu Eats Buu, A New Majin Attacks!!
Dragon Ball Z Kai: The Final Chapters
Since Cell's defeat Gohan has grown up and go to the university then she meets Videl which who has some adventures, then both and his new brother Goten are training for the new tournament, in which Goku came back from the dead for one day. In half of the tournament a misterious persons advice the group about the resurrection of the dangerous Majin Boo, but all plans fails and every one try new ways to stop The dangerous Majin Boo who gets stronger each time. Goku and his friends make everything for stopping them through fights.
(Source: Anime News Network, edited)
Note: Remastered version of the Majin Boo arc that adheres more to the manga's story.