For the next month they had a fixed routine. Every day they would wake up and clean the bedroom. They had breakfast and slowly started their workout afterwards. Broly started his routine with an intense powerlifting workout under 1400x gravity, all in his base form. The girls stayed in the same room, but were barely able to lift their fingers, as they were crushed into the ground.
Broly forbade them to turn Super Saiyan, so they suffered under the gravity in their base form while their only objective was to survive. Usually they wouldn't come out unharmed, with several broken bones, they almost always needed to take a healing capsule to recover.
They could have trained in their own training room, as his ship had 5. This room and another had the same modifications, while the rest were simple gravity rooms. The weights and the rooms themselves were all made out of the material from the underground base, which enabled them to sustain the harsh conditions inside the rooms.
Broly also always wore weights on his ankles and wrists, which were each 100kg, they just looked like oversized wrist- and ankle bands. His green-black armor was around 350kg. It was made with the last cutting-edge technology, so it wouldn't obstruct his movements.
In all he looked like he normally did in his armor, just with red weights on his hands and feet.
After that powerlifting workout, there would be a lunch break, which was the time the girls needed to recover with a healing capsule. Thereafter they would split up in two groups. If Broly didn't especially asked them to move into the other special room, they would have likely wanted to stay inside his room. Broly found it strange that they were so obsessed to stay with him as long as possible, but he didn't think much about it.
Anyway, they went inside their room together, while he stayed inside his normal training room. He activated 5 flying robots, and 1500 times gravity. He dodged their attacks using everything he could, bouncing of the walls or the ground, while trying to get closer to them. They were programmed to evade his approaches, while attacking him. To successfully complete this workout, he needed to endure at least an hour and then he had to press a bean sized button on the back of the robots and turn them all off.
After he did that, he activated them again and did the same as before only with the additional needles that would randomly fly out of the walls.
After completing that workout segment, he would turn all the options on. Making it almost impossible for him to stay at one place longer than a fraction of a second, forcing him into the air. Broly knew that most high-level battles would require abnormal reactions to all kinds of attacks, so he focused a major part of his training to doge high frequency attacks coming from all sides.
The blades swiping out of the walls were forcing him away from the ground and into the air. This would prove useful for the future as most fights wouldn't happen on ground but in the air. He also used this to hone his other senses to an unbelievable degree. Ki sense would be almost negligible for him in battle, so this would help him to locate his opponent through his other senses.
He could also feel his body, reacting on its own to some degree, but Broly knew that this was still lightyears away from the overpowered Ultra Instinct.
This segment of his routine was unpassable for the Broly now and would be unpassable for a long time, as he adjusted the conditions if he realized that it became easier. For example, he would increase the numbers of robots or needle output, there was also the option to increase the reaction of the blades and spears targeting him.
The temperature changes weren't as extreme as the high gravity, but it still put heavy burdens on the body and his mental state. It was also for him to let his body adapt to various environmental conditions without losing any battle capabilities.
His training regime was harsh to say the least. Most of the time it was this segment where he would collapse as soon as he gets out of the room, with numerous cuts and burns on his body. Of course, if he wanted to, he could just turn Super Saiyan or even his base plus Oozaru form, which he called Ikari, to prevent any injuries. But he wanted to push himself to his limits, until the brink of death. He figured that he should train as crazily as ever, now better than later.
It would be a shame if he naturally grew in power, making the room harmless to him without exploiting this room to train his movements and experience.
It would not be the same if he knew that these things couldn't hurt him, so he put in his all now.
After training his strength and movements it was time to integrate them into his combat style. First the three would take another eating break with the girls taking another healing capsule, before they went inside the room again.
Alea and Cana were fighting him alongside 2 robots, he wasn't allowed to turn off. They trained under 1500x gravity, which burdened Broly heavily. After the whole day of intense workout, he was already beat, and he hadn't taken a healing capsule, but relied on his natural recovery. The girls were also allowed to go Mastered Super Saiyan, while Broly could go Ikari to train his mastery in it.
This battle would always push him into a corner, where he would try to resist as long as possible. The multiplier of a Super Saiyan, who had completely mastered it, was no joke. He estimated that it would multiply their power up to 100x times. If they used the ascended Super Saiyan (SSj2), which is 2 times as strong as Super Saiyan Full Power, it would be a 200x multiplier to their base.
With his Ikari form, which currently boost his base eightfold, he was able to hold his ground against the two in their Mastered Super Saiyan plus the robots.
If one would convert their base strength at the end of the month into power levels, Alea and Cana would be hovering on the same level, which was around 250 million. Broly was around a 4 billion. When Broly was fighting against their Super Saiyan as an Ikari, Alea and Cana would hover around 25 billion and he around 32 billion.
Broly knew that according to the series he should be already unrivaled in the universe, but he couldn't help but seriously doubt that.
Zangya and Broly himself, they weren't in the main series, but he and she still existed in this universe. What does that mean about the strength of the universe? If Broly only looked at the main anime and manga series, there were rarely strong individuals, to the point that the series even went beyond the universe.
Even the movies themselves mostly don't connect to each other. Now with him and Zangya existing together, it meant that it was entirely possible that the other villains and many more experts hidden in the depth of the universe, which weren't integrate in the main story, existed here.
With more experts swaggering around the universe, it would be impossible for them to be as weak as stated in the story. Frieza shouldn't even come close to rule a major part of the universe with his meager power level of 120 million.
Maybe Frieza could rule a part of the galaxy, but the universe? With all the experts out there, that would just be a wet dream.
Even a human could come up with two cyborgs, No. 18 and No. 17, who could slap this 'emperor of the universe' to death. Of course, that is degrading the genius that is Dr. Gero, but would he be the only one in the entire universe with thousands of civilizations able to come up with a cyborg or android of similar strength?
Probably not, which only begs the question, how strong these experts here really are. Every time Broly thought about it, he became more excited.
'Hahaha. The stronger they are the better! It would be boring otherwise.'
After they were done with sparring, they would eat again and would spend a few hours meditating. Broly would also examine the two girls' cells and lifeforce for any hidden damages and help them fix it if they had any.
For the night they would shower or bath together, which sometimes led to a sweaty and steamy 'battle' in the bedroom, but usually they would not even bother to move out of the bathroom and get right into the action.
After a month of this hellish training, they finally arrived at the coordinates given by the city lord. They slowed down and observed the seemingly empty space. From the data Broly got, they had to be careful not to fly right into the barrier, destroying their ship.
Broly quickly took on his battle armor and a mouthpiece meant for breathing. Broly could use his lifeforce and ki to replace the basic needs for his body but if he could use a simple mouthpiece to breath, why would he waste his lifeforce for something like this?
Dressed up, he was ready to move out.