1) Always make the characters wear kimono. Never think of the fact that this is the 21st century.
2) Always make sure you make them eat sushi. Never think about how much it costs.
3) Always make sure the characters has black hair. Never think about how many young people in Japan dye their hair cause they think it's cool.
4) Always make you get a person in traditional clothes in your front cover. Never think about how most adults wear suits 5 days out of 7.
5) Always depict them as kind people. Never think about how there's so much bullying in Japan or about yakuza (gangsters).