On a technical level the influence of judo great Kyuzo Mifune and classical jujutsu practitioner Sanjuro Oshima of the Gyokushin-ryu cannot be overstated. One of the specialties of the Yoseikan Budo system under Minoru Mochizuki came to be the use of sutemi-waza or sacrifice techniques, in which these two teachers excelled. Although the far greater influence was undoubtedly Mifune in whose lessons the youthful Mochizuki found much greater enthusiasm, the teaching of the Gyokushin theory of 'spherical spirit' stayed with Mochizuki over the years, inspiring him to invent new techniques with this art's principles in mind. Mochizuki also credited his quick mastery of aikido with having learned this style which held many techniques in common with Ueshiba's art.