Who is the “ Puppet Son who manipulates everything behind the scenes?

In order to reveal the truth, Musashi (Sakurai) and others agreed to the request of Prajna Ibuki (Kato Kiyoshiro) and decided to hand over the Minister of Police Yayo (Koshi Takahashi) to conduct a ” hostage exchange.What is Ibuki’s real purpose…?
Honjo (Komimi Takiuchi), who was designated as the handover candidate, solemnly promised to his uncle's Yayano: “I will definitely let you accept legal sanctions alive.I will protect your life.”
The hostage exchange will be held in one hour. Hesuka Sakura (Senien), who was responsible for the search of the village, secretly formulated a plan - taking advantage of the hostage exchange and let the SAT team sneak in from another route.
At this moment, Yamato (Kukichi Fumima) said to Musashi: “I have a gift to give to you.”--To end everything, Musashi and Yamato once again form a partner to develop a certain battle...
The eve of the final return!The real purpose of monsters occupying the TV station has finally been revealed!Moreover, in order to find out the puppet, a % death press conference has officially started!Where will the fate of Yayo and Honbao go?Can Musashi finally reveal the true face of the puppet?