Akira Yokozuka

Three years ago, Ayano lost her husband and was running a small delivery business on her own, raising her daughter, Asami. Unable to pay high wages and struggling with high employee turnover, she followed the advice of her neighbor, Mr. Shiroyama, and offered her body to a new employee, Nishikawa, to get him to promise to stay for three years. Then, one day, Ayano and Asami had an argument. Asami confided in her boyfriend, Tonoyama, who embraced her tenderly and suggested they live together, but afterwards, Tonoyama ran off with the company's money…

The Hercules 4th planet is on the verge of death due to a strange disease that affects only men. The existence of organisms with similar genes was needed for making therapeutic drugs. At the end of a long journey in space, they finally arrive on earth. Residents of an apartment start to disappear one after another on that day. And suddenly, a mysterious young man named Suzuki appears.

Newly appointed teacher Chizuru attracts attention at her school with her bold personality and distinctive leopard-print style. As she settles into life in the classroom, her relationships with those around her become increasingly complicated, leading to an unconventional adult drama set against the everyday world of school.