In the vast galaxy known as Leuks and the world within it named Themser, exists a multitude of dimensions. While the galaxy's existence cannot be physically traced, its presence is undeniable. Among its inhabitants is Alice D'Matriese, a sacred angel renowned for her prowess in combat. Her sole purpose is to vanquish the Demon King, Luke Fier'Diese, the brother of Lucifer imprisoned in the forgotten garden of Eden. Her life's mission revolves around awaiting divine orders to eliminate the Demon King. However, fate takes an unexpected turn when she crosses paths with the demon ruler. Despite understanding the magnitude of her transgression, she finds herself unable to resist the stirrings of her heart.