At this moment, Musa, one of the guardians, stepped forward and said: "When that beam of red light descended earlier, we could all feel the dark side of our hearts being amplified. We figured this must be an ability directly targeting the mental realm. Aria and I discussed this aspect, and we realized we could create some mental defenses to resist it. Based on natural magic and wisdom magic, we have developed a mental defense spell. Of course, this spell is generally suited for beasts, but you can improve upon it using this as a foundation."
Subsequently, Musa demonstrated the mental defense spell in front of everyone and carefully broke down its mechanics for Alan and the others.
Just as Musa had said, with capable individuals like Alan, Zeref, Mavis, and Ultear present, improving this mental defense spell was an absolute breeze.
Chapter 158