The boy who will from future to stop the fight between Zyuohger & Ninninger is Yoshiharu Igasaki. He is the son of Takaharu Igasaki. Even he can transform into Ninninger. He uses Akaninger Shuriken with his name on it.
Gengetsu Kibaoni is going to revive in Zyuohger Vs Ninninger.
Not only Captain Marvelous, the whole Gokaiger crew is going to appear in Zyuohger to celebrate the 2000th Episode Broadcast of Super Sentai. The titles of the episode are → Episode 28: "Space Pirates Returns" & Episode 29: "King among the Kings". Updated version of Super Hero Getter will be played as the Ending Theme for these two episodes.
In the end, I really liked Mao-chan with Short hair.
Zyuohger Rumors: New Super Sentai Hero Getter will be played for Super Sentai 1999th & 2000th Episode
There are some rumors that a new version Gokaiger's ED "Super Sentai Hero Getter" will be played as ED in Super Sentai's 1999th & 2000th Episode (Zyuohger Episode 28 & 29) in which Gokai Red is going to appear.
The name of Next Super Sentai is revealed. Toei had applied trademarks for "Dobutsu Sentai Juu-Ohger". Doubutsu is the Japanese for Animal & Juu-Oh means King of Beast.
By the way, in Go-Busters' V-Cinema they transformed into Doubutsu Sentai Go-Busters.