I don't know. In principle, we can hang him. Even if my theory about the serial killer is correct, he'll die soon anyway, and if not, Kane will die. Either way, it's a negative outcome. I think we should figure out who Ru or Jen Li is and try to hang them.
There's evidence against Jen Li, but it led me to two possible suspects, which is a bit confusing. And after the last mafia game, I'm a little hesitant to execute based on evidence...
Regarding Ru, she's a local, and we can remember that the Uranus poll showed he's one of them. There are four locals in total, one is dead, and one has been recruited. Yashchur suspected that Uranus was recruited by Ricchi and even wanted to execute him before. Ricchi hasn't been recruited. But still, it turns out that Uranus has two peaceful roles to one recruited role.
Yashchur wanted to execute many people. In fact, I think he was testing the waters to see if the mafia would react. It's a very tempting opportunity for them to join the existing votes.
And Kent still hasn't answered who is not infected. But I don't blame him; the Armageddon chain could indeed be correct.
Update: If the infection had continued to spread to Kane, he would definitely have lost his double action – which, as you know, didn't happen.