A common search confusion: The subtitle Revenge of the Seven refers to the game's main antagonists—the former heroes (Kzinssie, Subier, Dantarg, etc.) who have become corrupted villains. The game's plot involves you, the Emperor of Avalon, hunting these seven legends across 1,000 years of in-game history.
For those who have just downloaded the (either via official eShop redownload or cartridge update), follow these steps: romancing saga 2 revenge of the seven nspupd 2021