As soon as the colony started shaking, Sousuke swore under his breath, "...bastard!" then he boosted at full throttle. He let the crossbars emit their particles to give him extra speed as well. In the previous battle, this act ate up a lot of energy due to the Earth's gravity. But this wasn't Earth, not quite anyway. And as soon as the Joker Magnum blasted a hole in the colony's sky, it would cease to be like Earth and become like Space. Without any gravity, or friction, the particle booster could last much longer and use far less energy while still providing the same increased speed.
"Lesson one?" Sousuke echoed, similar to Natsu, but he also added, "Here's a lesson for you, 2nd Year! Don't screw with me!" then Sousuke, in his frustration and genuine anger, instinctively activated his Gunpla's trump card. All of a sudden, the Crossbone Joker's speed literally tripled as its black color suddenly roared into a blazing red. Sousuke rarely ever used the Trans-Am system, as it had a tendency to cause backlash damage to the Joker like a double edged sword. But right now? He didn't give a damn.
"Plan?" he echoed in response to Natsu, "Yeah I have a plan. Rip that precious Gunpla of his to pieces and shove them down his stupid throat!" clearly, Sousuke was completely angry. It was a good thing this was a simulated battle, because he would otherwise be trying to actually kill Nanashi right about now. Sousuke discarded the Joker Magnum but didn't even bother deploying another weapon. As soon as he was close, he'd just go fisticuffs against and beat the living hell out of his gunpla. Most of all, he would actually try to grab the thing and use his tripled power and performance to try and force Nanashi back into the falling space colony.
"Lesson one!" Sousuke yelled, mocking Nanashi's earlier words, "Don't be afraid to take your enemy out with you!" with those words, Sousuke just confirmed his willingness to see his own Gunpla destroyed just to screw over Nanashi. That was a trait very few Gunpla Battlers had, as even the most stubborn fighters still cared a great deal about their Gunpla. Sousuke on the other hand had no problem at all damaging and breaking the Crossbone Joker in the process if it meant taking the other guy down. The first two battles Nanashi witnessed were examples of Sousuke cocky side. But this battle ended up being the perfect example of Sousuke's driven side, his unwillingness to back down and willingness to power through any amount of pain or self-inflicted damage for the sake of making his opponent lose.