With the beginning of their training, the two Saiyans are first taught properly obtain focus and Strengthen their spirit and mind. Studying the practice of being 'as be as quiet as the sky, and quicker then lightning'. Tarble expressed interest in pushing themselves even beyond what Mr. Popo wished, Popo reminding him that time must be given to reflect and rest. Tarble, knowing of the saiyan power (Zenkai Boosts), gives in for now. He figures that the high altitude would be enough to test their body for a while.
Six months pass as the two have begun mastering proper meditation and preparation for the next test, Goku taken first to a room they previously did not have access to. When he came back, he was drenched in sweat and looked mentally tired as his body looked like it received no real damage. Tarble then invited in, taken to a dark room with clocks on the walls. A large swinging pendulum over a strange circle, Popo directing him to stand in it and prepare himself.
Tarble doing so, his eyes opening to an earth under massive destruction, demonkin attacking innocent humans. A young Piccolo seen laughing as he began his destruction. Tarble horribly confused but could not let this destruction continue. Rushing in to battle the horde of Demonkin, taking to the sky and fighting. His strength and skill were more than enough to take on a few, but soon the Demon King Piccolo joined in. His power at its peak, and with minions to help, Tarble found himself soon on the losing side. Trying to escape and regroup his thoughts, only for a massive blast to overtake him made by the Piccolo and his children gathering energy together to kill him.
Tarble's eyes opened to seeing Popo before him, being explained that both Goku and Tarble will be training this way for the future. He further explains that it is a form of time travel, that his mind is give a spiritual form and sent to a past that cannot be changed. Events that happen will not truly transpire but the two of them will need to work to be able to defeat the Demon King in his prime by themselves.
The following few months, the two Saiyan's tails grow back. Kami makes his argument to remove them permanently so that he can place the moon back into place. Goku confused on how their tails stop this, Tarble informing him now of more of the Saiyan people, and that the tail allows all members of the Saiyan people to become Oozaru. Goku soon realizing he was the one who killed his grandpa. Tarble then argues that instead of removing the tails, they should focus on learning to control the Oozaru form. Kami does not enjoy this thought, as it meant risking things while they transformed. Tarble remarking that the tail is a symbol of a Saiyan's honor, it is part of their Heritage and he cannot allow it to be simply removed. He also explains he was trained in how to control it, and with the focus training Mr. Popo has given them, he feels he and Goku can master it.
Kami does not feel they have the time to be able to train for this. Then he suddenly has an idea, The room of Spirit and Time. The two can spend time in the chamber and get the extra year of training in a day, if they can manage to not be overwhelmed. He tells the two they will need to be proper mental preparation before entering. Because of this revelation, he leaves the tails for now, and will wait to see if both can learn complete mastery over the Oozaru form.
Tarble and Goku finish their first year of training on the lookout, wanting to develop the proper mental fortitude and spiritual strength for the room of spirit and time. When they first enter, Goku is amazed about how intense everything feels just through the door. Tarble remarking they need to begin training and allow themselves to get used to the environment. Suggesting giving themselves a month to fully adjust while training as they would have with Popo.
From the original series, we are told Goku only lasted a month (2 hours earth time) in the chamber before. But with someone to work with, and not be in complete isolation, and a strong rival to keep him interested. Tarble and Goku working to quickly adjust to the higher gravity, as stated it is x10 that of earth. Tarble having lived in a higher gravity planet before remembers its pressure and has Goku and himself do more calisthenics-based training to adjust to the gravity more. Tarble also slowly begins to enforce a longer and more intense training as the days go on, wanting the two of them to take advantage of the Saiyan's Zenkai Boosts in training, having the two of them push themselves more intensely by the end of the month, having at least twelve hours devoted to some form of training. During this month of time, Goku is also being taught the methods and made to repeat the steps of controlling the Oozaru form.
The two take another two months of training, building themselves up and preparing their minds to become Oozaru. Before Tarble attempts making a power ball and testing if the two of them can control it. Tarble and Goku, do not control themselves as much as they would want the first time. The two can control the form enough to not destroy the exit to the chamber, but the two do beat each other up many times. Thirty-two total attempts are done, before both can completely control themselves in their Oozaru form, speaking normally and able to test out their martial arts in the form.
The remaining of the year is used to have session of training in Oozaru to make sure they have a full understanding of its form if they ever must battle in it, but also in their base form to increase their natural strength.
On leaving the room of spirit and time, Mr. Popo and Kami are amazed at the progress the two have made. The two continuing their training once more, using the Pendulum room to test their new skill in defeating the Demon King at his strongest. Kami worried there was nothing more he could do, but the two continue training on the lookout. Kami giving them weighted cloths to try to intensify their work out, but the two continue their 12-hour training regimen to push each other to their limits.
After the final year passes, the two just smile down to earth. "Looks like it is time." Goku says, ready for a good fight. "Hope to see you in the finals." Tarble nodding as the two leaps down, Goku having been taught to fly during these years and both heading down to the tournament grounds.
Return next time for when the battles finally begin! Remember, the others have intensified their training to, so the battles may still be difficult. How difficult, and how will things have changed for better or worse? Find out in the next chapter! The 23rd Martial arts tournament!
Power Levels for those who care
Original (as seen in the Daizenshu that I am using, which could be wrong as it is not the booklet but a website.)
Goku- goes from 260, to 360 (A 1.4 multiplier, give or take)
This stories power level-
Goku- 260, to 520 (a x2 multiplier, due to a training partner, a full year of Hypiy bonix Rhyme Chamber, and intense training due to Tarble's advise.)
Tarble- 210 to 504 (A x2.4, due to a training partner who is stronger than himself, the chamber, and intense training due)
