After leaving his previous job to honor his late grandfather, Ubuki takes over the long-established haberdashery Ginmokusei on the outskirts of Tokyo's prestigious Ginza district. However, he is struggling. Without his grandfather's expertise, the shop has fallen into a slump and is on the verge of failure, with no customers in sight despite Ubuki's inexperienced efforts.

Desperate and impatient, Ubuki's fortunes seem to change with the sudden arrival of a statuesque, handsome blond man named Theo. Theo confidently declares that he can turn the failing shop into a first-rate establishment and asks Ubuki to bet on him. While Ubuki is initially elated to have a customer, his joy is cut short when Theo bluntly informs him that his customer service skills are not up to standard.

The situation becomes even more complicated when Ubuki realizes that Theo is not a stranger. The two men share a past, having met before during a drunken hook-up. Despite the awkwardness and his reservations about Theo's true intentions, Ubuki is in no position to refuse help. Theo, who formerly worked as a maître d'hôtel at a high-end restaurant, brings a wealth of industry connections and a taste for luxury, but the reasons for his sudden departure from his previous job and his specific fixation on Ubuki remain a mystery.

As Theo guides the transformation of Ginmokusei, Ubuki finds himself caught between his anxieties over the failing business, the lingering grief for his grandfather, and his discomfort over his own darker skin. He also struggles with a married ex-lover he cannot quite let go of. At the same time, he cannot help but be drawn in by Theo's confidence and allure, leading to a tense, adult relationship where business and personal history become dangerously intertwined.