26-year-old Numagoe Sachi works for a Japanese-style bar and earns an annual income of 2.5 million yen. She lives with the goal of buying an apartment. Her routine is to spend her off-days going around to an apartment showroom in town in search of a “lucky property”. She studies the showroom with the dispassionate seriousness of someone just browsing around and asks questions that puts professionals to shame. Why does Sachi intend to buy an apartment alone? In truth, she suddenly lost her house in the past.