Rimun

Rimun (リムン) is a port city of the Roble Holy Kingdom.

Background
Located in the Northern Holy Kingdom, Rimun is a port city that lies to the west of the holy capital, Hoburns.

The Paladin of the Holy Kingdom Arc
and The Paladin of the Holy Kingdom II Arc During Jaldabaoth's invasion of the Northern Holy Kingdom, Rimun along with three other major cities and countless towns were among those captured by the Demi-Human Alliance.

After interrogating demihuman captives, it was reported by the envoys that there is an unknown demon, one of Jaldabaoth's followers who has control over this city, Rimun.

During the attack on the Holy Kingdom Liberation Army at the city of Loyts Rokesh, Jaldabaoth's designated commander of the demi-humans, reported that the Demon Emperor was currently in Rimun.

Layout
Judging my second hand descriptions, Rimun appears to be a coastal city.

Triva

 * Neia remembers seeing the Sea Dragon for the first time during her holiday trip to Rimun.