Dragon ball z is one of my favorite books, dragon ball z volume 26


is about buu defeated by goku. At the beginning of the battle buu


actually beat goku and make goku teleport. After teleporting to a


safe place, he saw vegeta and asked him to put the earing on, so


they can fuse to the ultimate warrior Vegeto, but vegeta refuse to.


Then goku tell vegeta that buu sucked Goten, Gohan, Trunks, and


even bulma's power,that's why buu was super strong. After vegeta


heard that he quickly put on the earing and defeated buu together.