I had been spending days with my childhood friend, Amane Kamitsuki, both of us harboring feelings for each other but neither brave enough to confess. Suddenly, a monstrous beast appeared before us and launched a vicious attack. As we fled in panic, I was soon cornered and forced to watch helplessly as Amane was brutally tormented by the demon Incubus. The sight shook me to my core, pushing me to the brink of uncontrollable rage. At that very moment, Amane transformed before my eyes into the guardian angel Angelion. Standing before my stunned self, Incubus revealed the truth: "The great demon Dalmon is sealed within you, and Amane was placed by your side solely to keep watch over it." I was shattered by this unimaginable reality. To break my spirit, Incubus intensified his assault on Angelion, slowly breaking down her resistance until she began to fall. What followed was an inevitable descent into tragedy.