Mizuno is a 16 - 17 Year Old fish-like person who wants to befriend everyone in this tournament called "Law of Talos" that they are in. But, when they come across Karl, They try to do the same thing, only for Karl to "Accidentally" stab Mizuno with Arma, the raven which is supposedly Karl's pet. Luckily, Mizuno doesn't die, but this does result in a battle.