'She is really strong.' Callius thought to himself as he was being pressed by the vines that were attacking him from every place around. 'Her raw mana strength and magic output are no joke that I have seen so far.' He observed as the mana around Diana obeyed her command.
Of course, even though this was a spar and Diana was serious, Callius' fighting way of style was different from normal.
Rather than recklessly charging at his opponent and playing his cards right away while overpowering them with his strength, he would rather fight with them while hiding his cards and observing his enemy.
And when he finally had seen everything that could be seen, he would show his strength.
His years as an adventurer had taught him the importance of understanding one's opponent fully before unveiling his own strength. 'One is never omnipotent and can never be. Every human being is dangerous when they have nothing to lose.' He would say to himself.