As Billy had expected… Learning magic is easier when you have that parameter at a high level. It was supposed to be obvious, considering that he only learned light spear when he became fast and strong enough. In any case, even though he could use Fire Manipulation, he couldn't train anywhere, even if he were careful. At the very least, the fire will consume the oxygen in a closed space. That was more than enough reason not to use it at home.
"Using this at the training grounds is no good as well…" Billy rubbed his chin thoughtfully. "I suppose I will keep practicing the other elements first."
Billy decided to combine water and wind and see what happens. While he could control each element with each hand, he only ended up creating a water sphere that had air inside even with the power of the rings… he had a long way ahead.