' s ▁guard ian . ▁In ▁ 1 5 4 6 , ▁he ▁assist ed ▁at ▁Nob un aga ' s ▁gen pu ku ▁ceremony . ▁ ▁So on ▁after ▁Nob u hide ' s ▁death ▁in ▁ 1 5 5 1 , ▁H ides ada ▁became ▁concerned ▁about ▁Nob un aga ' s ▁err atic ▁behavior , ▁and ▁secret ly ▁supported ▁O da ▁Nob uy uki , ▁Nob un aga ' s ▁brother , ▁as ▁successor ▁to ▁the ▁family ▁head ship . ▁In ▁ 1 5 5 5 , ▁Nob un aga ▁killed ▁O da ▁Nob ut omo ▁and ▁captured ▁Ki y os u ▁Castle ; ▁H ides ada ▁was ▁made ▁to ▁defend ▁N ago ya ▁Castle . ▁Nob un aga ▁un ified ▁the ▁O da ▁cl an ▁by ▁defe ating ▁all ▁oppon ents , ▁and ▁took ▁control ▁of ▁O w ari ▁Province . ▁However , ▁H ides ada ▁was ▁still ▁deeply ▁diss atisf ied ▁with ▁Nob un aga . ▁In ▁ 1 5 5 6 , ▁H ides ada ▁together ▁with ▁Sh ib ata ▁K ats u ie ▁gathered ▁troops ▁to ▁ou st ▁Nob un aga ▁and ▁replace ▁him ▁with ▁Nob uy uki . ▁They ▁lost ▁in ▁the ▁Battle ▁of ▁In ō ▁and ▁a ▁temporary ▁tr uce ▁was ▁bro ker ed ▁by ▁Nob un aga , ▁who ▁did ▁not ▁want ▁to ▁continue ▁a ▁fight ▁that ▁might ▁draw ▁an ▁invasion ▁from ▁neighbor ing ▁da im y ō s . ▁H ides ada ▁and ▁K ats u ie ▁were ▁both ▁p ardon ed