While Caelis was enduring the attacks, Aion recalled everything he thought about improving Inner Force in an efficient way. His first improvement wasn't perfect, and since the system didn't recognize the technique, he had to think a lot about how to do that… his first idea came when he realized the weakness of his version. It was inefficient. So, he thought of training his body to make it possible to use all of the energy properly.
His second idea came in the last few hours when he fought the old man martial artist, he had full control over his body, and he obtained that with constant training, but more importantly, his bracers could store energy, and that was what he thought that he should do: accumulating the energy to use Inner Force beforehand instead of using what he had and making his body tired faster.
