Lynx, no one is immune to mistakes. Especially considering that most of the people who voted to eliminate Kitz are likely Mafia, and among those who voted to eliminate Koshu, there are also Mafia members. I'm not denying that I played poorly and made some silly mistakes, especially considering my role (it was the first psychological game after all), and I will try to improve.
I think that Spira wasn't blocked by anyone, and he just happened to be on the Mafia team. Kitz could have at least cast a vote on him in case of a block. And this whole charade with the cops and potential jurors is just pointless.
After Tox said that you might be Mafia, I doubt that you are Mafia.