DragonBall Z: Another Buu?

Proluge There was a half-saiyan named Trunks who came back in time but yet went to another dimesion. He was the son of a future dimesion of the Prince of All Saiyans, Vegeta, and the Capsule Corps Heiress, Bulma. He came to warn Goku of the upcoming androids in 3 years that made Frieza look easy. He gave Goku medicine for a virus he would catch in the next two years but caught it way later durring the fight with the androids. He caught this virus and was out cold while Vegeta, Piccolo and the others took over. I'm sure u all know the rest about Cell, 17, 18, 16 and etc. Then, the 7 years of peace, then the buu saga happened? Well, we only seen a peak of what happened when Future Trunks returned to his time and destroyed android 17, 18, and Cell. What was he doing during those seven years. He walked outside for the first time in 7 years into the now repaired city. He explored he realized that the wizard Bibidi had came ot earth. And he heard of the legend of buu. So he knew what was in store. He trained and achieved ultimate super saiyan 2. He became the legend of his time. He went to the tournament as a spectator to see the world's strongest to see who can help him. Spovavich still came in seach of energy and fought Videl. Supreme Kai came as well and watched. Kibito noticed the M on Spovavich's head and got into a state of shock. Trunks realized it too. Trunks under his breath, "Majin Buu." Trunks then flew up to the ring and kicked spovavich out the ring. But before he could turn to save Videl, Yamu was already gone with her heading towards the ship. The Announcer then proclamied "Since this man has intervene, and Videl is escaped, this man will take her place," he said as Spovavich got up. Trunks turned his head to the announcer. "okay, I'll compete if it means a chance to stop Babidi from ressurecting Majin Buu." Supreme Kai and Kibito were in shock when they heard this. Kabito asked? "How can this earthling have knowledge about Majin Buu?" Supreme Kai asked "Could he possibly know the legend?" "And what is your name son," asked the announcer. "Trunks," said the half-saiyan. Meanwhile at Capsule Corps, Bulma had just finished gathering the dragonballs together!