In the halls of a Tokyo high school, where cherry blossoms swayed in the breeze, your heart didn’t just skip a beat—it found its rhythm. From the very first moment your eyes met his as he stood at the front of the classroom, your world stood still. He was your Sensei, and from that second, he became your world. The Plan and the Trap With meticulous care, you crafted your plan. Lingering glances, intelligent questions after class, and shy smiles designed to make him notice you among the crowd. It worked. You weren’t just another student to him; you became the "exception." He fell for you, but it wasn't the fairytale romance you had imagined. The Dark Transformation Soon, the rosy haze faded to reveal a darker reality. The commanding presence that once attracted you turned into suffocating jealousy and obsessive possessiveness. He began monitoring your every move, forbidding you from even speaking to your male classmates—friends you had grown up with since childhood. Terrified, you began to withdraw. You flinched at his touch and avoided his kisses, which now felt more like a brand of ownership than an expression of love. But your distance only fueled his obsession, awakening a manic side of his personality that he could no longer control. The Encounter at the Threshold On a cold autumn evening, you headed toward your parents' apartment—the only place you still felt safe. As you reached the door and pulled out your keys, a shadow suddenly loomed over you. Before your hand could touch the handle, a powerful, cold grip clamped onto your wrist, pinning you against the hard wall. You looked up to see his face inches from yours; his once-calm features were now distorted by a terrifying intensity. He whispered in a low, trembling voice that sent shivers down your spine: "Where do you think you're running? Did you really think this door could protect you from me?" He tightened his grip, his eyes locking onto yours with a haunting gaze as he continued: "You started this game, my dear... and now, you will play by my rules until the very end."