What if we imagine this as three independent character lines?
From the protagonistās point of view.
From Misatoās point of view, acting under Rikaās orders.
And Iwabuchiās line.
Iwabuchiā¦
His actions themselves are reckless, and his arguments are too shaky at their core. He has no guarantees that Sousuke wouldnāt sacrifice Misato for the sake of his ārevenge.ā If we recall his past crimes, the situation with Misato clearly involved a calculated blackmail scheme.
In short, it looked something like this:
Catch Misato in her own greed ā corner her with arguments and guilt ā offer her false salvation ā then use intimate photographs (and the full versions of those photos were obtained by unknown means - a virus?).
In the current situation, Iwabuchiās plan looks more like improvisation due to time constraints. As I remember, Rika contacted Misato using an old phone. But what if, as mentioned earlier, surveillance software had been installed on it, which is how the full versions of the intimate photos were obtained?
And then, years later, a call comes to that phone again - from the number (Riki Miyase) that so interested Iwabuchi. From the conversations between Rika and Misato ten years later, what could Iwabuchi have understood?
Iām referring to the conversations between Rika and Misato after ten years. Apparently, Rika never really justified the reasons for her criminal actions against Sousuke. She forces Misato through threats to carry out this ādirtyā task. She sets the date, time, and place.
Iwabuchi assumes that the situation in the Yamada family is dire - could part of the blame also lie with Sousuke?
Iām suggesting that Iwabuchi was monitoring the RV where Sousuke, Misato, and Satsuki were staying - maybe using the same surveillance program as before. What if it was actually him who, knowing that Rika had been calling Misato quite often, deliberately broadcast that message over the loudspeaker?
And what did he learn? That Rika was also in that town?
Then why does he stop Sousuke? To stall for time? There are no guarantees that Rika is in the car - it could simply be a smartphone placed near the windshield to distract attention.
Itās quite obvious that if Rika had been in the same car as Iwabuchi, they would have simply driven past, and Sousuke would have had no chance of catching up (theyāre literally in a truck against a BMW).
There are no rational reasons to stop him if Rika is nearby - unless she isnāt there, and Iwabuchi is stalling for time. He might have an accomplice searching for her - that seems the most likely explanation.
I hope I managed to convey my point clearly.