The defensive battle has been more than difficult as I discovered some pretty obvious serious issues, at least they are obvious now.
After defeating the Demonic Dragon little by little more and more people gathered near the World Tree, all knowing the importance of defending the center of magic being the central link of large-scale magic ritual balancing the energies of the environment.
Thanks to this ritual, everyone could fight without being restricted by the environment and without losing their main senses, but defending Silvia became more and more difficult.