HP: The Immortal Who Never Stops Smiling

"Come to my study—I have a gift waiting for you." Fifty years later, the promise remains unfulfilled. As an ageless anomaly bound to Hogwarts by an unbreakable vow, Eli has watched generations pass through the castle's halls. He values trust above all, yet when faced with the only person who makes his immortal heart beat like a human's, he discovers that some promises cut deeper than others. Between duty and desire, principle and passion, Eli must navigate a dangerous game where even his eternal smile might falter—especially when betrayal comes with a wand through the heart.