Hi there! Yes, some most rappers talk about how rich they are- in a song- or how great a rapper they are in comparison to other rappers- in a song --alot of times in fun competition. But ,Kanye is alittle different, he speaks to another level on how great he is constantly. If you happen to catch one of his interviews, you will hear the difference. Trump came to mind also. I don't know any details about Japanese culture. Thanks for responding.