After graduating from the University of Tokyo and joining a major company, Hanamura Kaoru was on the fast track to becoming an elite, but for some reason, she suddenly quit her job and is now struggling to find a new one. Kaoru interviews with the venture company RAINBOWLAB, where she meets its president, Hidaka Mamie. Mamie is a high school dropout, but she’s well-liked thanks to the exceptional communication skills she developed during her time as a delinquent. She’s become the company’s spokesperson, creating a huge buzz for the company’s products, and is also a single mother raising her undisclosed daughter, Iroha, on her own.
Kaoru is exhausted from her daily pursuit of the ideal workplace, but when Mamie offers her a well-paid position as a private tutor for Iroha, who is preparing for her elementary school entrance exams, she impulsively accepts. Iroha wants to go to the prestigious private Ryuwa Gakuen Elementary School, which values discipline and tradition and places high expectations on parents, making it impossible for Mamie to balance her work and Iroha’s studies. Furthermore, the entrance exam places great importance on a written test as well as a parent-child interview…
