Dyon immediately delved into increasing his foundation in array alchemy.
The problem with his foundation stemmed from how he started off. Much of his base knowledge in array alchemy didn't from his master, but rather, Focus Academy. So, one can imagine how damaging that might be.
This was made worse by the fact he had immediately tried to find shortcuts even in those lacking methods.
Dyon couldn't be blamed for this, in reality. He had done this out of necessity. Had he not sped up his learning process, his life would have been in danger.
For one, he would have died in his very first encounter with Akihiko, the man who had tried to marry his Madeleine. Without his array alchemy, Akihiko's arrow would have without a doubt flown right through him, ending his life. And that was only one occurrence of his array alchemy saving his life. He even had examples of him using it to trick the higher experts of the big sects so that he could escape to the Elvin World.