ข้อมูลอนิเมะDragon Ball Z Kai: The Final Chapters

Seven years have passed since the battle with Cell. Gohan is now a high school student attending Orange Star High School in Satan City. On his way to his first day of school, he comes across a bank robbery in the city and stops it with his Super Saiyan form. As rumors spread about a "Golden-Haired Warrior", Gohan gets to know his new classmate and Satan's daughter, Videl. After a day of trying not to act suspicious in front of his classmates, Gohan approaches Bulma, who gives him a transformation watch to hide his identity.

Gohan approaches Bulma, who gives him a transformation watch to hide his true identity. On his way home, Gohan encounters two people driving recklessly. This is where he comes up with the alias "Great Saiyaman", and scares the people into driving more safely on the road. Gohan returns home later that night, where Chi-Chi and Gohan's little brother, Goten, discover that Gohan now has a costume to conceal his identity while fighting crime. The next day, Videl is called in to stop a bus hijacking and handles the criminals, but the bus falls off a cliff, as nobody is driving the vehicle. Gohan uses the alias "Great Saiyaman" once again and pitches in to save Videl and the passengers. (Source: Wikipedia)

The next day, Gohan learns that Chobi, who is the child of Toto the pterodactyl, has been captured by a circus and put on display. In his attempt to rescue Chobi, Gohan is portrayed as a criminal. Videl pursues Gohan as a suspect. When Chobi's parents attack the city in search of their child, Gohan manages to handle the situation and return Chobi to his parents. Videl discovers the truth that Gohan is Great Saiyaman. Videl blackmails Gohan into participating in the 25th World Martial Arts Tournament. As some of the other Z Fighters express interest in the tournament, Goku calls out from the Other World and says he will return to Earth for a single day to participate.

After Gohan spreads word of the tournament to the others as well as managing to convince Chi-Chi to let him participate himself, Gohan takes a leave of absence from school and begins training with Goten. Gohan is surprised to find that Goten not only possesses great strength, but he is also already capable of transforming into a Super Saiyan even though he has yet to learn how to fly. Videl comes around to have Gohan make good on his promise to teach her how to fly. (Source: Wikipedia)

Gohan starts her off with the basics of learning how to control her energy. Within a day, Videl has managed to learn how to float, while Goten has managed to learn how to fly. Following a remark from Gohan, Videl comes back the next day with her hair cut. Videl is determined to learn more from Gohan. Meanwhile, Vegeta is also surprised to find that Trunks is also capable of becoming a Super Saiyan, whose strength is slightly higher than Goten's. Goku trains fiercely in anticipation for the tournament. (Source: Wikipedia)