Kai is the undisputed band leader and legal guardian of the other four members. It's rumored that Kai gave birth to the band after being impregnated by God, (Who was Reita at the time, we're pretty sure,) much like the Virgin Mary. In fact, as you may have read at the beginning of the article, The Gazette was supposed to be the second coming of Jesus. Unfortunately, Harry Mason showed up and snuck some Aglaophotis into Kai's tea, therefore terminating the pregnancy. The result was not the apocalypse, as intended, but the premature birth of a pagan deity that eventually became the band you know today. Or maybe you don't know them. But you should, because one day the rapture will come and their revenge on the non-believers will be ruthless.
Kai loves to cook food for his children, and often reads them bedtime stories. Except for Reita, who is going through those awkward, rebellious teenage years. He recently obtained a driver's license, but still refuses to drive, cars being an evil invention of the band's arch enemy, Dir en grey. Dir en grey and The GazettE used to be on good terms, until Dir en grey was taken to the dark side. That, and Kyo kept trying to look like Ruki. Or was it the other way around? Oh, god, nobody knows anymore.