Naturally, Gerald wasn’t commenting on the attack itself. While her attack style was definitely powerful, what he meant was that before attacking, she often left herself wide open to be countered. Adding that to the fact that she never changed her attack style, any opponent stronger than her could most definitely be able to see through her attack patterns in time. It explained why Gerald was able to defeat her so easily.
The only reason why she had been able to win all the previous times was b