Cid Kagenou

He is reincarnated into a magical, medieval-fantasy world as Cid Kagenou, the second child of a noble family. Possessing a massive pool of magic, he hones his skills in secret. He adopts a "mob character" persona—intentionally living a painfully average, forgettable school life by day while looking like a clumsy background extra.By night, Cid transforms into a mysterious vigilante named Shadow. One night, while experimenting on demonic possession, he unknowingly heals an elven girl. To entertain his chūnibyō (eighth-grader syndrome) fantasies, he fabricates a conspiracy story about a mythical threat called the "Cult of Diablos" and spins himself as the mastermind fighting them. The elven girl, named Alpha, believes his story completely and recruits others to form Shadow Garden, a secret organization dedicated to fighting the cult.and he met a girl that he felt warmth,connection and love towards her

she has a flowing,black elegant hair ethereal mane meant to represent the cosmos skylight with starry sparkles and blue eyes shimmering like diamonds she also possesses superhuman physical strength, speed, and endurance. She has been shown to take down wild boars with her bare hands and easily pierce human skulls with her weapons as an assassin and darkness weapons...she is a dark frost dragon and a nine tailed dark celestial fox