Ten-year-old Takuya has a new job: to look after his baby brother Minoru…looks like it's time to put on the kid gloves!

Young Takuya has it tough. Since his mother passed away, he's had to take care of his baby brother Minoru while their father works the long hours of a Japanese "salaryman."

Takuya's neighbors Seiichi and Tomoko are on the outs, thanks to Seiichi's weakness for gambling. But with Seiichi unavailable, Tomoko can dig up only one date for her big class reunion: Takuya! Worse, at the reunion, the whole class learns Seiichi's most embarrassing secret. Can Seiichi and Tomoko patch things up this time, or will reliving old school days turn the adults into bickering kids?