My guardian demon

"Letting go is never easy. I want to be by your side, but our clan will relentlessly pursue us. I must safeguard you, Sierra. I vow to find you. We will reunite one day, I promise."
Raige grants his best friend a tender yet powerful kiss before she departs lifeless. He imparts a trace of his essence, ensuring he can sense Sierra's presence when their paths converge once more. He is certain she will return to life. According to myth, when a vampire consumes the elixir, she perishes but is reborn as a human. This was Sierra's wish, and Raige fulfilled it in honor of his best friend's desire.
He is a transfer student, but he is remarkably rebellious for someone new to the school. Many students idolize him, as if he were a deity. He is the eldest son of the Victorious family, the wealthiest family in the country. As mentioned before, he possesses breathtaking beauty. However, he also has a rebellious streak. He always manages to be the center of attention, but he also instigates conflicts at school.
Ever since he first laid eyes on me, I have become his target. He bullies me and takes pleasure in embarrassing me in front of everyone. But what confuses me is that whenever were alone, he treats me with utmost sweetness, like I am the most precious thing in the world. He even hired me to work for his family's company.
Despite my hatred for him, I have no choice but to endure his presence. I must tolerate his games and whims because he is the only lead I have in my sister's death case. However, when I discovered his true nature, I felt an urgent need to escape. He is not just a bully or criminal; his a vampire!