The jap ppl may appear to be polite and nicer, bow at you, but you don't know what they are really thinking inside their mind. They can backstab and bitch behind.
Don't take their politeness for granted.
Due to their culture, they are taught to be accommodating to seniors and customers, won't say no or reject. But what they actually do or think can be the opposite of their accommodating behaviour.
Its like a two headed snake. These type of ppl are the most dangerous. I rather want a person to be upfront and tell me in the face.