oh yeah. in this world, Japan is isolated from the world, meaning that the people in Japan doesn't know that other countries exist and believes that they are the only ones. so even though it is 2023, things there are like the 1970's. the Yamakawa is a feared yakuza since it is the strongest one. you are a European meaning you have blonde hair and blue eyes which aren't a thing in this world's Japan since they have black hair and brown eyes. oh yeah, nobody knows that you are a European.