After listening to Ferro's narration, Angel's expression was not so optimistic: "This method could work, but the process of accumulating the fireball and deceiving the mechanical head's perceptions isn't that easy."
In Ferro's plan, Angel controls the fake "Ferro" to hold off the mechanical head, while he secretly accumulates the fireball cluster within the illusionary realm. Once it's ready, he uses the flame spell, catching the mechanical head by surprise, and then concludes it.
Everything seems reasonable, but to achieve it perfectly, one must be extremely fortunate.
Firstly, the fake "Ferro" must hold off the mechanical head for a minute without being discovered. This likelihood is relatively low because with the dense barrage similar to washing the ground with water bullets, illusions can't use flame spells and will likely alert the mechanical head to the false nature of the illusion.
Secondly, Ferro must be stealthy during the accumulation of twenty-five fireball clusters.
