You Kept Everyone Waiting! A Reborn Gohan Returns to Earth!!
The intense clash with Majin Buu reaches a critical turning point as the grueling battle takes a heavy physical toll on the fighters. Meanwhile, far from the battlefield, the lengthy ritual in the Sacred Realm of the Kais finally reaches its conclusion, clearing the way for a newly transformed fighter to enter the fray.
Aired 08/02/2015EP 43 - You Kept Everyone Waiting! A Reborn Gohan Returns to Earth!!
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.