Tales of Legendia/Fridge

Fridge Brilliance: There's no Holy element in this game. Instead, there's "Sea" and "Curse". Sea is actually sacred in this game so it's the "Holy". This also means that water-oriented spells like Spread, Maelstrom, Tidal Wave, and Aqua Laser are sea, as well as Judgment, Ray, and Brilliant Lance.
Fridge Logic: The hidden door at the Ruins of Frozen Light. Yes, Jay could have just told the party about it, but there was a closed door behind the hidden door. Either way, they would have had to go through the Great Hollow and the Underground Lake to get inside the Ruins, due to the second door that was behind the hidden door. Seeing as they opened the second door from inside the Ruins, they couldn't have gotten in even if Jay told them about the hidden door.
- If the Ferines can live in the ocean, why bother living on land at all?
  - The sea had been extremely rough ever since the Orerines created the first landmasses. Presumably, it was too rough for the Ferines to live in.
Now WAIT A MINUTE! How did Maurits survive being overtaken by Nerifes and why's he now a good guy? What made him change his ways when he seemed so hell bent on drowning the entire world and destroying all Orerines, and even if he did change, what would make the party members so easily forgive HIM?