▁kar ate ▁in ▁summer ▁vac ation ▁at ▁the ▁hon bu ▁do jo ▁( head quarters ▁training ▁hall ) ▁of ▁the ▁Ky ok ush in ▁in ▁Tokyo . ▁ ▁Ky ok ush in ▁kar ate ▁After ▁gradu ating ▁from ▁the ▁university , ▁Mi ura ▁became ▁an ▁u chi ▁des hi ▁( live - in ▁student ) ▁at ▁the ▁hon bu ▁do jo ▁for ▁two ▁years . ▁When ▁Mi ura ▁was ▁an ▁u chi ▁des hi ▁( live - in ▁student ), ▁he ▁studied ▁kar ate ▁from ▁Ter ut omo ▁Yam az aki , ▁for ▁whom ▁Mi ura ▁has ▁expressed ▁much ▁respect . ▁Mi ura ▁entered ▁the ▁Third ▁All - J apan ▁Full ▁Contact ▁Kar ate ▁Championships ▁( A J F CK C ) ▁tournament ▁and ▁placed ▁ 4 th ▁in ▁ 1 9 7 1 . ▁He ▁won ▁ 1 st ▁at ▁the ▁Four th ▁A J F CK C ▁in ▁ 1 9 7 2 , ▁defe ating ▁Howard ▁Collins , ▁T osh ik azu ▁Sat ō , ▁and ▁J ō k ō ▁Nin omi ya ▁along ▁the ▁way . ▁ ▁So on ▁after ▁Mi ura ▁became ▁champion , ▁Mas ut ats u ▁O y ama ▁( found er ▁and ▁director ▁of ▁Ky ok ush in ▁kar ate ) ▁asked ▁him ▁to ▁particip ate ▁in ▁the ▁ 1 0 0 - man ▁k um ite . ▁The ▁ 1 0 0 - man ▁k um ite ▁involves ▁fighting ▁ 1 0 0 ▁kar ate ▁pract ition ers , ▁with ▁each ▁full ▁contact ▁match