C80
"Do I have any other choice?"
Compared to Jiraiya and Tsunade's nervousness, Orojimaru's reaction was actually very calm.
Orojimaru was very clear that if it was something that his teacher wanted to do, no one would be able to stop his entire Ninja Realm.
For example, back then when he charged into the enemy camp to save Uchiha Tsugaku, even the second generation Hokage could not stop him