Should also kill anyone who tries to save that person. Otherwise, just weaker yak imho.

I like it, used as a One-Shot

It's a much more complicated role than yak is. Yak is a simple one-for-one conversion. Kamikaze wouldn't see its ability used every game. It would end up being probably more like guiser (but I would hope used more than that) where the ability isn't always used but everyone knows it's a possibility that has to be accounted for.

so its the yakuza but shit

If you're wondering why this would ever be useful, consider the fact that it would 1. allow mafia to take out two PRs in one night; 2. make a normal kill the night the mafia kills the bomb; 3. kill off the Kamikaze in a useful way if it's likely the Kamikaze will be investigated; etc.