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At the Shrine of Heroes, Cthulhu points out that a metal gate, which is on the other side of a wall, will stop him and Umi from going forward, and they'll have to find a switch to lift the gate. Umi asks how he can see through walls, and his response is that he's just cool like that.
The creature descriptions are unhelpful - but funny! Examples include:
Necromancer: The female necromancers are much cuter.
Sea Ghoul: Surprisingly, only the 7th worst pun in this game.