Ep. 1940: Where is the Secret Letter?
Ipinalabas noong Hunyo 21, 2016

1940
Unexpected events led Kirimaru and the others to lay their hands on a secret message and being chased by ninjas and thieves. There are Hoteitake, Kusaurabenitake, Suppoutake ninjas, etc... Doi sensei appears and together with the trio, they go towards the forest. (Source: Nintama Rantarou Wiki)