When a breakthrough is used, a tremendous amount of mana is released by the mage. It activates all of the magic circles surrounding one's heart. The power manifests depending on what type of person one is.
Not everyone's breakthrough is the same, but some can be similar. The mass amount of energy released will be based on what type of affinity the magic circle has. In this case, Bronk's was Ice magic, which was why the whole room had gotten chillier, and everything was now covered in frost.
'A six-star mage doing a breakthrough—I was hoping he didn't know how to do that,' Kelly thought. 'I think this is going to be a lot harder than Harvey thought.'
As the magic started to settle, Kelly could see Bronk standing there, different from before. His whole body was covered in ice. It almost looked like armor, a knight in light blue, covered from head to toe, apart from his eyes.
