On his lonely birthday, the protagonist uses a family heirloom—a mysterious charm—and makes a heartfelt wish: to meet someone he can truly love. The very moment the wish leaves his lips, he is startled by the arrival of a handsome stranger holding a cake. But this magical encounter is immediately tainted by a warning from the stranger: "Don't fall for me. That feeling, it was created by the charm—it's fake." "You made the wish, so you must bear the responsibility." The protagonist is faced with a baffling dilemma: Is the intense, undeniable attraction he feels for this man real, or is it a mere trick of magic? And what exactly is the nature of the "responsibility" he must now bear for his silent birthday wish?