thought there was going to be a big reveal that the whole reason Arasaka developed the chip to take over minds was that Saburo wanted to extend his life by taking over his son's body. That Yorinobu found out which is why he killed his father, but his father's bodyguards forced the chip on him after taking him with them after the murder. And that all Yorinobu's actions for the rest of the game was Saburo's mind having taken over his body.
That would have made a great plot twist and it never happened.
That would have made a great plot twist and it never happened.