Just recently, episode summaries coming from various magazines has revealed what's next on Kamen Rider OOO after the TV debut of OOO Tajadol Combo! Hopefully, we will have OOO Shauta Combo on the next episodes!
Spoilers alert! Please read at your own risk!
Episode 21:
The Grasshopper, the Father and Son, and the Ally of Justice - 2/6
Eiji goes out to take out the trash and meets a boy called Takashi. Kambayashi, his father who always talks about justice to his son. He used to be Chiyoko's classmate. Uva senses this and starts observing him and created the Grasshopper Yummy.
Eiji and Ankh searches for the Grasshopper Yummy. It starts to develop a warped superhero mentality and attacks bad guys, returns a stolen bag to a girl and starts saving humans. Eiji still decides to stop it.
Episode 22: N/A - 2/13
After seeing Takashi rooting for the Yummy, Eiji is hesitating to fight it. Kambayashi fails his bar examination and starts to take the justice thing too far and uses the Grasshopper Yummy to attack yakuzas and corrupt politicians. Eiji then finds out that Kambayashi and his wife has separated.
Episode 23: N/A - 2/20
Kazari creates a Yummy from a girl working at a beauty salon. Akira Date then invites Eiji for lunch. Ankh follows them to eavesdrop and hears Date asks Eiji if they've met before.