[1.2.339] Lionheart Castle?

Doubtful since Crimsonheart is called Crimson n JMS CWK (version w/o Masteria) and KMS has the same.

Since CWK is connected via Aqua Road it is plausible CWK is somewhere in El Nath (in KMS and JMS). Masteria might be put to death soon to keep continuity.

Masteria is nowhere near Elnath, it takes one minute travel time to get there from kerning, it's obviously just off the coast near victoria/kerning.

Then there is the small part about the entire continent of Masteria being risen from the sea by the mayor... JMS just pineappleed it up, and shouldn't even be in consideration for the continuity of the place. Just like Neo city isn't the *real* thing, neo tokyo is...