It had been 6 and a half years after cells defeat, the Capsule school was spread worldwide. By this point, every major city had an academy for training martial arts. Though it was the original academy in west city that was the most prominent one. We had guests daily wishing to become part of our school, as such we had to develop brutal trials in order to sort out the best students out of all of them. In the meantime, I had told everyone about Majin Boo and how he would he coming within a few years, everyone was enthusiastic about this and as such threw themselves into training. In the meantime, I contacted Bulma and had her update the gravity chamber to 2000 times Earth's gravity. Bulma didn't bother asking, she already knew the extent of the training that we had to go to, as such she proceeded to upgrade our gravity chambers.
Eventually a few months before the tournament, a short purple skinned man who floated in the air along with a tall red skinned man. 'Shit this soon already?' I thought. Shin was surprised, "how did you know about us mortal?" I couldn't explain it this time, so I motioned then to follow me to a deserted wasteland. We flew for a few hundred miles and landed in a deserted area. I came clean to them and told them about my previous life and how I was reincarnated. Shin touched my head and read my thoughts, "I see, you aren't lying. It's good that you've taken all of these steps to prevent any threats to earth. And you're sure that you'll be able to stop boo?" I nodded, "Supreme Kai, I've been training my ass off for the last 6 years along with everyone else. I hope that we can handle it. But, worst case scenario I taught the Mafuba to the human fighters so we should be able to seal Boo if it gets down to that." Supreme Kai nodded, "Very well then, I'll return in a few months when the tournament begins. That's when Babidi and the others will strike, feel free to warn the others as well. Feel free to hide your origins if you want." As he was floating off I called out to him, "Wait shin, right now I'm confident that we can defeat boo if he gets out of his egg. But if you want it to be 100 percent sure, then get the Z sword and some Katchin to Kami's lookout and I'll gather all of the fighters there." Shin looked at me, again with shock, "You even know about that, very well, if you think this will guarantee our victory then I shall do it." Shin left for a few hours and returned to the lookout where I greeted him with all the Z fighters, Everyone was gathered there, Goku, Vegeta, Broly, Paragus, Tarble, Raditz, Nappa, Tien, Chaotzu, Yamcha, Krillin, Gohan, Goten, Trunks Piccolo, Yajirobe, Roshi, ChiChi, and Videl. Shin handed me the Z-Sword and I told him to get the Katchin ready, I powered up a Kaio Ken times 50 and managed to barely hold on to the Z sword. I held up the sword and told Shin to throw the katchin at the sword. He threw it at the sword and it was cracked in half. Shin was horrified, but I told him to hang on, finally an elderly purple man appeared and introduced himself as elder Kai.
I approached him and gave him the rundown, and as an offer I took out some dirty magazines and told him I had plenty more plus tapes. In return, he had to unleash our hidden potential. He happily agreed and as such started the ritual on us. For the next 3 weeks, we were all on the lookout having our potential unlocked, finally we had done it. We had our ultimate form unlocked, now every one of us would at least he able to stand up to Majin Boo, I shook hands with Shin and thanked him for this, then told him we would see him in a few months.
With that, shin, elder Kai, and Kibito dissapeared and went back to the afterlife. We spent the next few months simply training for Majin Boo and eventually the tournament arrived. As we left the dojo, Shin and Kibito showed up and greeted us, then we flew off alongside them.