Ninja Box
Japanese title: ニンジャボックス
Type: ONA
Source: Game
Episodes: 6
Status: Finished Airing
Aired: Aug 8, 2019 to Sep 12, 2019
Duration: 11 min per ep
Rating: PG - Children
Studios: Tatsunoko Production
Genres: Action, Adventure, Comedy, Fantasy
Demographics: Kids

In the anime's story, Hiroto longs to build a secret base near his house, and in his house's storeroom he meets a ninja and "Nintuber" named Tonkachi. Tonkachi, who knows about the existence of the "Ninja Box," forces Tonkachi to go to the "Village of Tatemakuri," where they meet a talking dog named Tatezou. 

(Source: ANN)