Theory of Sicsa.

An ordinary office worker, Kyung-soo, lives like a complete invisible man at his company — until one day, a single piece of chicken changes everything! After accidentally stepping into a mysterious restaurant, Kyung-soo tastes a legendary chicken recipe, and from that moment, his dull routine begins to spiral in unexpected ways. Suddenly, his once-indifferent coworkers start noticing him, the office goddess Yu-jin shows interest, and even his arrogant boss Seung-ho, who used to look down on him, begins watching him suspiciously…?!