Sempai, also said Senpai, is a honorific for a upperclassman. Someone who is higher in rank than you, such as a collage student if you're in high school, or someone who is at a higher position at a...
It's written ε /bou/. It's the kanji for 'boy, & priest, as in εδΈ» /bou zu/ which means both 'monk' and 'young boy'. As an honorific it's used to show endearment and familiarity towards a...