Kamoshida is such a well executed starter villain, his crimes are much smaller in scope than some later villains but it feels so much more personal. Both because of what he did to Shiho and because you interact with him personally a fair amount, he’s nearly as openly malicious to you in reality as his Shadow is. He’s also a very believable villain even with how monstrous he is.
Also unrelated but with how much eavesdropping you (can) do in the game I’m pretty sure its basically a hobby for the protagonist.