what is senpai
6. Senpai. In Japan, senpai (åè¼©) is a mentor or senior. Senpai is roughly equivalent to the Western concept of a mentor, though it does not imply as strong a relationship as these words mean in the West, and the term is used more widely and with greater give then the western equivalent term.More simply, it can be translated as Senior or Elder.n Japan, senpai (åè¼© ?) is a mentor or senior and kÅhai (å¾è¼© ?) is a protege protÃ©gÃ© or. Junior the mentor system is found at all levels of, education and in sports, clubs, businesses and informal or social. organizations