, ▁To ▁confront ▁Py ō , ▁To ▁soldier ▁on ▁T ō , ▁To ▁battle ▁with ▁Sh a , ▁Again st ▁one / person ▁K ai , ▁With ▁everyone / ent ire / group ▁Jin , ▁The ▁formation ▁R ets u , ▁In ▁a ▁row ▁Z ai , ▁To ▁presence ▁Z en , ▁To ▁move ▁forward ▁ ▁There ▁as ▁many ▁as ▁ 8 1 ▁variations ▁to ▁the ▁Ku ji - in ▁within ▁certain ▁sect s ▁of ▁Buddh ism ▁in ▁Japan , ▁to ▁say ▁nothing ▁of ▁other ▁mud ra ▁that ▁are ▁also ▁used . ▁ ▁Mean ings ▁in ▁Nin j ut su ▁While ▁the ▁k u ji - in ▁have ▁no ▁unique ▁relation ▁to ▁nin j ut su , ▁the ▁nin ja ▁trad itions ▁are ▁ste ep ed ▁in ▁es oter ic ▁Buddh ist ▁belief s , ▁especially ▁Mik ky o . ▁The ▁k u ji - in ▁are ▁used ▁in ▁a ▁number ▁of ▁their ▁med itations , ▁both ▁those ▁related ▁simply ▁to ▁their ▁religious ▁practice ▁and ▁those ▁dealing ▁with ▁their ▁mart ial ▁arts ; ▁in ▁some ▁ways , ▁they ▁are ▁used ▁similarly ▁to ▁the ▁T ao ist ▁ideas ▁in ▁Chinese ▁internal ▁mart ial ▁arts ▁( some ▁of ▁the ▁ideas ▁of ▁Chinese ▁internal ▁arts ▁are , ▁however , ▁incorpor ated ▁in ▁many ▁Japanese ▁arts , ▁including ▁nin j ut su ▁and ▁ju j ut su ). ▁In ▁his ▁book ▁Nin ja ▁Vol . ▁II : ▁War rior ▁W ays ▁of ▁En light en ment , ▁Stephen ▁K . ▁Hay es ▁claims ▁the ▁following ▁interpret ations