You Really Are the Greatest, Goku!! The Demise of Majin Buu (やっぱり最強孫悟空！！魔人ブウ消滅 Yappari Saikyō Son Gokū!! Majin Bū Shōmetsu) is the one hundred sixty-fourth episode of Dragon Ball Z Kai. Its Japanese air date is June 14, 2015.
The Spirit Bomb hits Kid Buu, but he starts pushing it back. Goku uses all of the remaining energy he has left trying to push it back into Kid Buu, but he is too powerful. After a brief panic, Vegeta suddenly remembers that they still have a third wish with Porunga. He instructs Dende to wish for Goku's power level to be restored to its normal, healthy level. The wish is granted, and upon turning into a Super Saiyan, Goku is easily able to force the Spirit Bomb back at Kid Buu. As he does so, he silently wishes that Buu had been a better person, and hopes to fight him as a different person, some day in the future. The Spirit Bomb hits with full force, finally destroying the evil, childlike Majin Buu permanently. After billions of years of destruction, he has finally been brought to justice.