Just a few miles from Sylphid Academy and a few kilometres from Sylphid City lies a forest so dense that one could get lost in it if they were not careful. That forest was called Coast Forest by the locals, and its name is stuck until today.
Coast Forest was a place known to people as a den of monsters. As a dangerous place that was close to civilization, Coast Forest was an anomaly in the Silvan Kingdom. Except for the border area, not many places dangerous to civilization were allowed by the government to exist. Usually, Silvan Kingdom would send an expedition squad to lower the general threat to the public. Of course, the 10 forbidden areas were not included in those lists because the Silvan Kingdom would use too many resources to clean those areas.