Born in an era humans lived within walls, Alex Mikado had always yearned to explore the outside world since he was young. Everything changed when the outer wall got destroyed. Beasts of various kinds broke through causing havoc in the once peaceful zone. Alex and his family weren't left out. He lost his family, leaving only him and his younger sister in the cruel world. The facade of peace had been broken, and now humanity must rise and fight for their lives. He had awakened his powers in an unforeseen circumstance and realised that with this power, he could finally achieve his goals. With his new power, he journeyed across, unravelling secrets about his family and life outside the walls. Are you worthy? Do you yearn for unimaginable power? Are you willing to sacrifice your soul? With this strange power and grimoire, he sought to change the world and put an end to the enslavement of humans by the alien race.