A year later, inside the Hyperbolic Time Chamber, Kakarot, Vegeta, and Trunks had all perfected Super Saiyan 4.
Son Goku's Super Saiyan Ape 3 form had also compressed from three and a half meters tall to three meters. Although he had grown smaller, his strength had improved considerably.
His body was utterly indestructible. Even when Kakarot, Vegeta, and Trunks went all out, they could not inflict any damage.
The three told Son Goku that they had pushed Super Saiyan 4 to its limit and asked how to train for Super Saiyan 5.
Son Goku circled them once and said, "You aren't strong enough to break through to Super Saiyan 5 yet. But I can tell you how to train for Super Saiyan 5 and even Super Saiyan 6. Whether you succeed will be up to you."
Kakarot, Vegeta, and Trunks nodded, signaling for Son Goku to continue.
So Son Goku explained the training method for Super Saiyan 5 to them.
After hearing it, the three remarked on how complicated it was. They needed the ability to survive in space, had to eliminate the time effects caused by black holes, and even had to train on a black hole.
But when they considered the power of Super Saiyan 5 and Super Saiyan 6, they could understand why.
Afterward, the four left the Hyperbolic Time Chamber and returned to Bulma's House.
Although only a day had passed outside, an entire year had passed in the Hyperbolic Time Chamber. None of them had bathed for a year, so their condition was easy enough to imagine.
The four immediately went to bathe, then ate a huge meal afterward.
Beerus and Whis happened to arrive on Earth, and the six sat together and chatted.
In the days that followed, Son Goku continued training on a