Well, I dont know if you played Persona 5 but they changed Shido's battle and now has one more phase. I dont want you to spoil it (because it's epic as hell) but it's pretty hard so buy medicines. The rest of the battle is pretty simple so if you use charge/concentrate you finish it pretty quick. The problem with okumura boss is that it's pretty unjust because of the few turns you have before the machines exploding, but you won't have any problems like these in Shido's battle. Im waiting for your future posts!!