Goku flew back with full energy, and it took him less than a day to fly the entire Snake Path.
Suddenly, Goku saw a figure and asked with a smile, "Kami, thank you for your hard work, waiting for me here."
"Goku, it seems that your training with King Kai is going very smoothly." The Kami could feel the powerful aura from Goku, which was far beyond his reach.
The Kamis then took Goku back to the Earth Heaven.
Goku returned to the Earth, breathed the fresh air, and said with a smile: "A year has passed, and I am back again."
"Nimbus."
Afterwards, Goku jumped onto the Nimbus, said goodbye to the Kamis and Popo, and flew away from Heaven.
Goku stood on his Nimbus, gazing at the Earth below, and said, "There are still three years until Raditz arrives on Earth. Keep steadily improving your strength and strive to become a Super Saiyan within four years. Otherwise, you won't even be able to defeat Frieza and you're doomed."
After flying all the way back to Paozu Mountain, Goku jumped off the Nimbus.
As he walked to the door, he could hear Chi-Chi talking and laughing with the children.
He opened the door and said, "I'm here."
"Goku, you're back! That's great." Chi-Chi was instantly excited. After all, she hadn't seen Goku for a whole year and missed him very much.
Goku hugged Gohan and asked, "Where's Bulma? Did she go back to West City?"
"Yeah! Bulma just went back four days ago." Chi-Chi nodded in response.
............
After resting at home for a week, Goku went to West City.
The gravity device that he asked Bulma's father to make a year ago should have been completed long ago.
All the way to West City, Bulma's house.
Bulma was also very happy when she saw Goku, after all, they hadn't seen each other for a year.
Bulma smiled and said, "Goku, I know you came here for the gravity training device!"
"Haha!" Goku responded with a smile, "Not entirely, it also includes the part where I miss you."
Goku is not a fool, no matter what! First coax the woman over!
Sure enough, Bulma also fell for Goku's tricks.
Later, when Goku saw the spaceship and walked into it, he was very satisfied with the facilities and equipment inside. It was indeed Bulma's family, with solid scientific research capabilities.
Bulma explained, "This gravity device can reach a maximum of three hundred times gravity, but Goku, don't easily turn it up to three hundred times gravity, you won't be able to bear it at all."
"Don't worry, I won't do anything. I'm very satisfied." Goku was very satisfied with this gravity device.
He originally thought it would be a hundred times, but the result was three hundred times, which far exceeded his expectations.
Bulma looked at Goku's happy face and laughed happily. Then she said, "By the way, Goku, I have good news for you. During the year you were away, I helped you collect the Dragon Balls again. I know you will need them when you come back. What do you think? I am very considerate!"
"Bulma." Goku was very moved at this moment and went forward to hug Bulma.
Bulma is truly a good wife in career, while Chi-Chi is a good wife in life. They each have their own advantages.
............
Three days later, there was no one in the west or east.
Goku placed the Dragon Balls on the ground and fell into deep thought. He was thinking about what wish he should make this time.
Goku glanced at his buttocks out of the corner of his eye. Normally, a Saiyan's tail would automatically grow out every once in a while, but after two years of traveling through time, the tail had not responded at all.
Goku probably thought of the reason. It was probably because the Kamis pulled out Sun Goku's tail and it never grew back.
In the future, he will become a Super Saiyan 4, and the tail is a very crucial point.
Although using the Dragon Wish to grow a tail is a waste of talent, the tail is one of the keys and is definitely indispensable.
Now that he had made up his mind, Goku no longer hesitated and shouted loudly, "Come out! Shenlong!"
The seven Dragon Balls began to sparkle, the sky became darker and darker, and a dragon flew out of the seven Dragon Balls.
The dragon looked at Goku and said, "Tell me your wish! As long as it's within my ability, I can help you realize it."
"Shenlong, my wish is to grow my tail again." Goku said his wish without hesitation.
"I understand." Shenlong's eyes lit up and he said, "I have fulfilled your wish. Goodbye."
The Dragon Balls scattered again and flew to all parts of the world.
............
A furry tail grew out from Goku's butt. Goku turned his head to look at his tail, stroked it with his right hand, and said, "Is this my tail? It's incredible."
Goku gripped the tail tightly, and instantly his whole body went limp. He quickly released his right hand and said, "Looks like I'll have to include tail training in the next step."
"Although I didn't feel anything after growing a tail, there must be a difference. It's just that I'm too weak now to discover the mystery."
"As for how to evolve into Super Saiyan 4 in the future, the steps are crystal clear to me."
"Transform into a giant ape, enter Super Saiyan while in giant ape form, maintain sanity, control the energy in your body, and then evolve into Super Saiyan 4."
"After a year, I will need to rely on the power of the dragon again to keep me sane after transforming into a giant ape. Sun Goku's body cannot maintain sanity on its own after transforming into a giant ape."
"Why should I think so much now? I need to improve my strength first. I haven't even become a Super Saiyan yet!!"
Another half month passed. During this time, Goku had been practicing in the spaceship under twenty times the gravity.
Goku was not in a hurry to achieve success, but planned to lay a solid foundation, gravity training, ten times and ten times more, there was more than enough time.
Bulma also left her home and went to Paozu Mountain.