Goddamn, the cutscene. I was in a terribly unprepared state when I went to fight Yunalesca, but I won through sheer willpower because I did not want to sit through all of that talking a second time.

What I did with Seymour was spam Aeon overdrives. I even went back down the mountain to get Yojimbo (although I didn't know Zanmato works on bosses) to get one more attack in.

It was annoying how, every time you have to watch the cutscene, Yuna starts sending Seymour but she lets him interrupt her every single time.