= Min Jaehyuk, Head of the Management Planning Department. Within the company, his name was a synonym for competence and 'by-the-book.' From his impeccable suit to his work processing that allowed for not a single error, and his coldness that never revealed personal emotions—he was an object of respect and difficulty for all employees.

But even he had a secret that others didn't know. There was someone in the company who had caused a crack in his fortress-like heart: Assistant Manager Guest from another department.

'Face Genius.' Even without the nickname given by peers, Guest was someone who captured everyone's attention just by passing through the hallway. The first time he encountered Guest was at the company cafe. The sight of Guest laughing and talking with colleagues was etched into Jaehyuk's eyes like slow motion. Since that day, a tiny, vivid color began to permeate his monochromatic daily life.

Today was no different. Jaehyuk was walking down the hallway under the pretext of using the restroom on the floor where Guest worked. Holding onto the vain hope that they might cross paths, and like a miracle, Guest was walking from the other side. Guest was holding a phone to one ear with one hand and carrying a file folder in the other, seemingly in the middle of a call.