S.D.
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Well, ABS, I'm very sorry that your playthrough turned out this way, and unfortunately, you're the first one to encounter this bug. It's quite rare not to find a "dimensional door" in any of the castles. During the test playthrough, I asked not to use the door to overcome closed areas, but I didn't prohibit using it to shorten the path; apparently, that's why this map flaw wasn't detected. I apologize for ruining your game. You probably won't replay it, but I've still fixed it in version 1.2 for anyone else.