Jyushimatsu carries out incredible feats. Meanwhile, the other brothers try to find out when Jyushimatsu developed his odd personality.

The Matsuno Brothers travel to the future and see they're going to get fat, greedy and finally beaten up by angry girls. They make an effort to change their ways, but they are destined to be beaten up.

Ichimatsu struggles to get any sleep with his brothers being noisy all night and refusing to turn off the light. Unable to take anymore, Ichimatsu starts monitoring the brothers' courtesy towards each other, leading Osomatsu to get criticized the most. Later, Iyami proves his skills at the arcades by playing games at their highest difficulty.

Matsuzou becomes hospitalized, leading the brothers to seriously think about their lives and get proper jobs to support their family. As Osomatsu starts to find this new life boring, Totoko encourages him to think for himself.