You learn something new every day. For instance, I'd never heard of Yasunori Kato before, but he's a pretty influential character from a pretty influential work.
Who is Yasunori Kato?
He's the (slightly indirect but also plenty direct) inspiration for a fellow you might have heard of if you're a video game fan: One M. Bison.
He's also been called the Japanese counterpart to Dracula or as similar to Aleister Crowley (by the author who created him, in fact) and apparently is responsible for the resurgence in popularity of the traditional Japanese magic system called onmyodo.
Incidentally, Kato comes across to me as something of a kaiju (giant Japanese monster). Why? Because his mission in life is to destroy Tokyo.