Ninja Boy Rantaro· Season 18 · Episode 21Episode 21S18E21·30m·NHK BS1Not streaming in your region — see every region's optionsSharePreviousEpisode 20S18E20NextEpisode 22S18E22Keep goingSeasonSeason 18 ranked & reviewedEvery episode in airing order with ratings and dates.StreamWhere to watch Ninja Boy RantaroEvery streaming service and region, checked around the clock.MatchupShows like Ninja Boy RantaroThe closest matches, ranked by overlap and rating.
