Ep. 1978: Kirimaru attempts to sell water at a checkpoint while Shinbei drinks the supply.
Aired on May 12, 2017

1978
Kirimaru tries to earn money by selling water to people waiting at a checkpoint. Rantarou and Shinbei assist by carrying the water. However, Shinbei becomes thirsty and drinks some of the water. An old lady then appears, stating that she wants to drink water.
Episodes
- Ep. 1974 · Third-year students convene to analyze their collective failure in the Explosives License Exam
- Ep. 1975 · Komatsuda Returns After Hearing Rumors of Makinosuke's Death
- Ep. 1976 · Rantarou and friends search for lost Fubuki near a cliff after he gets separated during a Dokutama picnic.
- Ep. 1977 · Fourth-year Mikiemon seeks to surpass rival Takiyashamaru's popularity
- Ep. 1978 · Kirimaru attempts to sell water at a checkpoint while Shinbei drinks the supply.
- Ep. 1979 · Doi-sensei visits Tofuntake Castle branch to investigate potential war preparations
- Ep. 1980 · Fifth-year I-class students encounter Heisuke using water techniques
- Ep. 1981 · Second-year students face a hide-and-seek exam led by shy Matsuchiyo-sensei
- Ep. 1982 · Igasaki Magohei arrives at the dorms seeking Kisanta