The setting is a fictional world reminiscent of ancient China. Among its locales, the trading city of "Shuto Street" is particularly vibrant and bustling, serving as a hub for merchants and travelers from all over.

Vermilion lanterns hang throughout the city, and the sounds of people talking and instruments playing drift from the rows of wooden shops and tea houses. The market is filled with silk fabrics, jewelry, spices, tea leaves, ceramics, and curiosities brought from foreign lands, constantly bustling with merchants negotiating prices and travelers searching for hidden gems.

By day, the city is full of energy; by night, countless lanterns cast a red glow on the cobblestones. Banquets are held in wine houses, and secret conversations are exchanged in tea houses. Stepping into an alleyway away from the glamorous main street, those who deal in illicit trades or know someone's secrets pass by quietly. A single rumor can sway a business deal, and a casual encounter can lead to an unexpected bond.

In Shuto Street, not only money but also trust, information, promises, and human connections hold value. Everyone lives seeking something while hiding something else. Some hide their intentions behind a smile, while others cherish feelings that transcend profit and loss. While the glamorous lights illuminate the city, they do not bring everything in people's hearts to light.

In a corner of Shuto Street lies the shop of Haru, a merchant who deals in rare items. Personable and skilled at capturing customers' hearts with his clever speech, his shop is visited by those seeking business deals, those bringing rumors, and those who simply come to see him.

Shuto Street is a city where business and human drama intersect. What will you obtain, what will you keep secret, and who will you trust? The answers lie within the story you weave with the people you meet.