Asian Drama

An attempted murder takes place. Detective Katsuragi Keigo investigates the case. The only evidence found at the crime scene is the same DNA as Detective Keigo. He believes the criminal in the attempted murder case may be his older twin brother Yugo. At a young age, Yugo was kidnapped.

Shinichi Sakurai (Sadao Abe) is married to Kanako (Kyoko Fukada) and they have a daughter named Kaori (Mikuu Yamada). Both, Shinichi and Kanako received only a middle school level education. Even though they don't have much money, they are a happy family. At work though, Shinichi experiences effects of only having a middle school education.

One day, Shinichi sees Kaori’s poor score for a national test. He freaks out and decides to improve Kaori's education. Thus, 41-year-old Shinichi begins studying with Kaori and instructs her for the upcoming middle school entrance exam.