Fox Tail

Fox Tail is one of the Eight Good Races players can choose from in Elder Tale. It is notable for its skill swapping ability, which has made it a relatively unpopular race.

Lore-wise, Fox Tails are one of the three demi-human races created by the Northrilia Project to fight against the evil demi-humans created by the alvs.

Overview
They are humanoid with fox ears and phantom tails (the number of tails is dependent on the character's level). Unlike the other man-beast races, Wolf Fang and Felinoid, the Fox Tail race receives a boost in magical, not physical abilities.

In lore, Fox Tails have the ability to hide their ears and tails, making themselves look like ordinary Humans, and is presumably an ability of all Fox Tails in the game. Nureha uses this to her advantage in her Overskill, Overlay, which combines this piece of lore with her subclass, Courtesan, to create a "perfect disguise." One of Minami's assassins in "Isaac and Iselus" uses this ability to disguise himself as a nobleman during Iselus' birthday celebration.

Skill Swapping
A notable feature of the Fox Tail race is its skill-switching. When a Fox Tail player reaches a certain level threshold that would have unlocked a class or race skill, there is a chance of learning a skill from another class or race's instead of whatever they would have properly learned.

This can work either in favor or against the player, depending on the skill learned. Because of the randomness involved, Fox Tail is a relatively unpopular race to pick.

Trivia

 * According to Mamare Touno, the skill-swapping ability was simply added to make Nureha unique compared to Shiroe, and he stated that it would be impractical to add it in a real MMO.