In some regional IKO organizations , this title is only used by Branch Chiefs , and thus everyone above and including 3rd Dan is called Sensei unless he or she is a Branch Chief .
It is the generic title for all ranks above and including 5th Dan .
In some regional IKO organizations , this title is only used by Branch Chiefs , and thus everyone above and including Dan   is called Sensei unless he or she is a Branch Chief .
It is the generic title for all ranks above and including 5th Dan .