Well, I thought my team could beat anything. Turns out I was wrong. Vantage Hector is absolutely ridiculous. Had him in a 3-on-1 with Effie (Full HP), Klein (Full HP), and Minerva (2 HP). He killed all of them without taking damage (except from Effie) because of his vantage-auto counter BS.
Good God, and I thought Takumi was bad....