▁him ▁to ▁the ▁position ▁of ▁tax ▁administrator ▁in ▁ 1 8 5 8 . ▁When ▁N aria ki ra ▁died ▁that ▁year , ▁ Ō k ub o ▁joined ▁the ▁plot ▁to ▁over throw ▁the ▁Tok ug awa ▁sh og un ate , ▁the ▁de ▁fact o ▁military ▁dict ator ship ▁that ▁had ▁ruled ▁Japan ▁as ▁a ▁fe ud al ▁state ▁since ▁ 1 6 0 0 . ▁Un like ▁most ▁S ats uma ▁leaders , ▁ Ō k ub o ▁fav ored ▁the ▁position ▁of ▁t ō b aku ▁( <0xE5> <0x80> <0x92> <0xE5> <0xB9> <0x95> , ▁over throw ing ▁the ▁sh og un ate ), ▁as ▁opposed ▁to ▁k ō bu ▁g atta i ▁( , ▁mar ital ▁unity ▁of ▁the ▁Imperial ▁and ▁Tok ug awa ▁families ) ▁and ▁han b aku ▁( opp osition ▁to ▁the ▁sh og un ate ) ▁over ▁the ▁S onn ō ▁j ō i ▁movement . ▁ ▁The ▁outcome ▁of ▁the ▁Ang lo - S ats uma ▁War ▁of ▁ 1 8 6 3 , ▁along ▁with ▁the ▁Richard son ▁Aff air ▁and ▁the ▁September ▁ 1 8 6 3 ▁coup ▁d ' état ▁in ▁Ky oto , ▁convinced ▁ Ō k ub o ▁that ▁the ▁t ō b aku ▁movement ▁was ▁do omed . ▁In ▁ 1 8 6 6 , ▁ Ō k ub o ▁met ▁with ▁Sa ig ō ▁Tak am ori ▁and ▁Ch ō sh ū ▁Domain ' s ▁K ido ▁Tak ay oshi ▁to ▁form ▁the ▁secret ▁S atch ō