Gender Bender, yandere, pure love, light suspense (with romance)
Bai Chengyi woke up one morning to find he had changed from a cool, handsome 180-centimeter man into a sweet 160-centimeter girl. In his panic, only his best friend Su Chen accepted his absurd predicament, helping him rebuild his life under the identity of Bai Ling, his distant cousin. But just as his new life began, a sickening gaze quietly fixed upon him.
His deskmate, Qian Yuying, always wore a black-and-gray hoodie and went out of her way to befriend him. In truth, she was a stalker lurking in the shadows. She used tenderness as bait and trauma as a noose, methodically insinuating herself into Bai Ling's life: first as Qian, a photographer online; then as an intimate deskmate in real life; and finally as the person who took in a vulnerable drunk on a stormy night. She crossed physical boundaries by bathing with Bai Ling, then emotionally blackmailed her with a tragic past. At last, just as Bai Ling and her protector Su Chen argued over a confession and their trust began to shatter, Qian seized her helpless prey and drew her completely into her grasp.
The school trip became the final act of the trap. Qian Yuying imprisoned Bai Ling in a mountain cave, burned the memories she treasured, and forced her to say, “I love Big Sister most of all,” destroying every last one of her psychological defenses in the name of purification. Wounded, Su Chen tracked them down, but a flash flood and the cave's collapse separated him from Bai Ling. When the waters receded, the two huddled together for warmth on a high ledge in the ruined cave. Facing death together, they realized that neither could be replaced in the other's heart. Bai Ling finally confronted her feelings and called him “husband,” bringing their relationship into a new, intimate chapter.
But Qian Yuying did not drown in the flood. Hidden in the shadows, she watched the rescue helicopter carry away her precious treasure, and declared that this was only the beginning.