Koryū make no use of the popular
kyu-dan ranking system. The gendai budō (modern budō forms), however, use the
kyū-dan ranking system. These rankings replaced the various certificates awarded within
koryū. Gendai budō also generally do not contain the same strong entrance oaths and rituals as
koryū, such as the
keppan ("blood oath"). Whereas in most gendai budō
dojo all are welcome provided they follow basic rules of conduct,
koryū instructors often strictly scrutinize candidates. The primary purpose of gendai budō is for spiritual and mental development through the study and application of East Asian
metaphysical techniques and teachings. ==References==