Merman

Mermen (マーマン) are an aquatic demi-human race that inhabits the oceans of the New World.

Background
Mermen were a race that inhabited the seas located around the Roble Holy Kingdom. They had a long history of mutual cooperation with that nation. However, the memories of war with demi-humans still remain strong with the humans and elevate the sentiment that they could never truly accept them as allies.

Abilities
According to the Web Novel, Mermen were marine creatures.

Trivia

 * In the Web Novel, the Mermen are also found in the Argland Council State.
 * One Merman, named Ran Tsu An Rin is a member of Nine Colors.