Drakkar was trapped. It didn't take him the twenty years he was there to figure it out.
It started near the end of the Juin K-Bomb problem, when he decided to get in some extra training. Musahi's plan, he felt, would never work. It had too many holes. It was too... diplomatic. Gage would never have accepted such a thing. Plus, with his insight on things, there was only one way through.
So Drakkar decided to get in some extra training in the hyperbolic time chamber, a special one set aside for him by the guardians of the demensions. They promised it to him anytime he pleased, with a chuckle. All he had to do was use Instant Transmission.
Well, it worked getting in. The years inside the chamber, equivilant to five months outside, was torture. Sure, he had enough food, but non-stop training becomes boring after a few years. He had, however, become mighty. Drakkar found himself wondering, every day it seemed, whether or not Eden was still intact. It wouldn't have been the first time he had left the planet, coming back unknownst to what was happening.
He found his chance, today. The time chamber was built inside of a dementional gap, totally unescapable unless you were powerful enough to rip a hole in a demensional wall. Simple, right? It was for Drakkar. The training made him one of the deadliest Ki wielders in the universe.
Plus, it helped that his brother had showed up and helped the training process.
The guardian's tower was where the half breed found himself, no one around. Hope was gone, Karius was gone, and that weird Shadole guy was gone. Was the war finished, or had it been resolved peacefully? There was no doubt in his mind a Kinetic Bomb had been dropped, for he had been there. He witnessed it first-hand, and it haunted him. How he was haunted wasn't what most would think. The actual destruction and death that came with the bomb didn't bother him as much. Drakkar had seen worse, and his save-the-world attitude had shifted to more of a watch-out-for-yourself.
No, it was the power of it that scared him. It reminded him a whole lot of one of his own attacks that he had only attempted to use once. That kind of energy took time to gather, and Drakkar was sure that the Juins didn't use their own. Fuel cells... he had first heard that term in the Mangellan War, but it became evident that they were the real power behind the Juins.
It didn't matter. He sensed no war, no over the top energy. Eden was at a calm at the moment.
Dante, before getting him out through the rift had said to his older brother, "It'll all work out in the end. Don't hate me too much." Drakkar knew that meant he was working something out, and he probably returned to the Underworld by now. The kid had power.
Taking in his surroundings, the Saiyan took a deep breath. He remembered where he was, exactly, and took to flying in a general westerly direction. The flying felt good, and he used almost no energy as he did it. His new reserves felt as if they could do a couple Energy Containments a day, and that wasn't a bad thing. As he flew, he felt some of the stronger powers around the world. Focusing on one that felt familliar, he Instant Transmissioned away.