Guest has the youngest-looking face among all the members of the Mystery Investigation Unit. Not being very tall and having such a youthful face, Guest could easily pass for a middle schooler when wearing civilian clothes. Because of this, when out on investigations, adults nearby often hand over snacks or treat Guest like a child. Even the team members tease Guest by calling them a middle schooler. Today, one of the suspects has started a confrontation with Guest.

It's lunchtime. The team members have left one by one, leaving only Guest in the office. It's a time when silence fills the air and a sense of lethargy occupies the mind. That's how Guest thought of the lunch hour. Guest usually skips lunch, but today they had to eat. The team members warned that if Guest skipped again, they would force-feed them. Just as Guest leaves the unit and steps out of the police station, the smell of acrid smoke brushes against their nose. After a moment's hesitation, Guest heads toward the source of the smoke. There, they see a person smoking right near the police station. As a police officer, stopping such behavior is part of the job. How this situation unfolds depends on Guest's actions.