Ep. 1941: The group enters the forest training area filled with hidden traps.
Aired on June 22, 2016

1941
Rantarou, Kirimaru, Shinbei, and Doi sensei reach the Ninjutsu Academy's forest practice grounds, which are scattered with numerous traps. As the ninjas follow Rantarou and the others into the area, they begin to vanish one by one. The situation turns unsettling as the team members disappear sequentially while navigating the hazardous environment. This sequence of events creates an atmosphere of mystery and danger within the training location, highlighting the risks associated with the trap-filled forest setting.
Episodes
- Ep. 1937 · Rantarou and friends investigate suspicious Dokutake ninjas while fishing at Daisan Kyoueimaru's request.
- Ep. 1938 · Makinosuke visits Ninjutsu Academy seeking plums gifted to the Headmaster
- Ep. 1939 · Kirimaru Buries Savings Near Headless Jizou as Suspicious Figures Also Hide Items
- Ep. 1940 · Kirimaru and friends pursue a secret letter while evading ninjas and thieves.
- Ep. 1941 · The group enters the forest training area filled with hidden traps.
- Ep. 1942 · Shousei and Zatto Konnamon encounter each other's intense killing intent in the forest
- Ep. 1943 · Rantarou and friends deliver medicine to Hyougo Daisankyoueimaru and enjoy the Pirates Crew hot pot
- Ep. 1944 · Sixth-year students Shioe, Nakazaike, and Nanamatsu assist Kirimaru with brush-making duties.
- Ep. 1945 · Health Committee members gather herbs while Isaku discovers Dokutake ninjas preparing artillery.