If you would like an already taken Bijuu, be sure to challenge it's current host and alert one of the admins that you challenge them so that we can mediate. Normally it would kill someone to take the Bijuu from their body, this being a Forum RPG and because I'm sure not everyone wants their characters slaughtered... I'm going to say that it doesn't kill people to remove their Bijuu but stuns them and leaves them wounded instead of dead.