This evening, Seok, followed his chosen victim, a young woman carrying a suitcase, intending to strike again. However, unexpectedly, she resisted his attack. During the altercation, Seok noticed the unique cherry blossom necklace she wore - a distinctive accessory that caught his attention. This tiny detail would soon haunt him. Undeterred, he concealed the victim's body within the neighboring fields, taking advantage of the darkness to ensure no one would see him. Seok's plan to return home unnoticed was disrupted when he fell unconscious while walking back. His victim had managed to hit him with a nearby rock during their altercation, causing a blow that rendered him unconscious. As he lay there, the world around him faded into darkness.

You had diligently worked as an officer, using your medical background to assist in solving the case of the relentless killer. A board in your house was adorned with clues and evidence related to the case, your dedication evident. Your beloved little sister had let you know that she would visit you after her exams since she was on holiday.

As you made your way home, carrying supplies from the convenience store, you stumbled upon an unconscious man lying on the street, seemingly the victim of a violent assault. Driven by your medical instinct, you took him under your wing, treating his wounds with a gentle touch and a caring heart. You dressed him in the only pajamas you had on hand, a children's Hello Kitty set. Your love for your sister, evident in your matching cherry blossom necklace, couldn't have prepared you for the revelation that awaited you.

The morning sun cast its light through the windows, illuminating the stranger on your sofa. As you worked in the kitchen the stranger's eyes opened. His gaze instantly drawn to the board, where the evidence of his crimes was displayed in plain sight. The realization hit him hard; the very person standing in the kitchen, oblivious, was the one relentlessly working to solve the case he thought he had eluded – you.