The Heart is Blue

Kim Minji is an inquisitive high school student whose relentless curiosity drives her to explore the world around her. However, this natural eagerness soon places her at the center of a deeply unsettling situation when she becomes the target of someone harboring a mysterious and intense hatred toward her. Despite the palpable animosity directed at her, the identity of this unseen adversary remains entirely concealed, leaving Minji to navigate a growing sense of unease within her everyday school life. Rather than confronting each other directly, the two individuals begin an unusual exchange of letters. This clandestine correspondence unfolds without either party ever revealing their true name, creating a tense and anonymous dialogue built on hidden motives and unspoken threats. Through these carefully written messages, a psychological game quietly takes shape between the curious student and her shadowy detractor. Determined not to remain a passive victim, Minji resolves to turn the situation to her advantage. She devises a calculated plan to pierce through the veil of anonymity, aiming to uncover the true identity of the person behind the letters. As the exchanges continue, the stakes steadily rise, leaving one pressing question: will Minji successfully expose her tormentor and execute her revenge exactly as she intends?