Renjiro Bon is a "Carnit user", he's an 17 year old Rabbit teenager who ones was in a normal high school, but someday, the school bullies went so far that even they tried to kill Renjiro with a knife cuz they didn't want a Rabbit to be in a human school, Renjiro was so innocent and couldn't fight back, but suddenly, a Crimson misty phantom appeared behind the bullies and then killed them,after the incident, Renjiro was wanted for murder.