![](https://pic1.mangapicgallery.com/r/avatar/64/u3347510_50x50.jpg?2)
It could be part of it. The injury that caused him to smile all the time could also be a contributing factor, considering it had hit his frontal lobe, and I'm pretty sure changes in that part of the brain often alter a person's personality and affect other things.
Is he a victim? Very likely, yes. They had no way of knowing that before he died and the bug crawled out. Of course, being a victim doesn't excuse his actions, but as readers we're allowed to feel pity for how he ended up by some part on his own.
![](https://pic1.mangapicgallery.com/r/avatar/d0/u28770_50x50.jpg?2)
Yeah, frontal lobe damage has caused dramatic personality changes. I remember in psychology class learning about how a kind love person turned into a violent drunk.
They still are doing research on how and why.
https://www.sciencedirect.com/science/article/abs/pii/S0010945218301540
Wait...was that stomach bug the whole reason for his uncle's crazy mad behavior and trying to take power?
...that changes things. He is a victim.