Senpai is a senior student in Japanese martial arts. In Kyokushin, the senpai helps beginners, maintains discipline, and keeps order in the dojo.

A senpai is not necessarily a coach. The title typically refers to a student who:
— has been training longer than others;
— holds a higher belt;
— helps junior students;
— knows the rules of the dojo.

The «senpai — kohai» system is considered an important part of Japanese culture. The kohai — the junior student — is expected to treat the senior with respect.

In Kyokushin, the senpai often helps by:
— demonstrating technique;
— preparing students for examinations;
— organizing competitions.

This system helps maintain discipline and mutual respect within the school.