Feirune

Feirune formerly known as Shinohara Mirei (漆原美麗) is one of the students that reincarnated, she has reincarnated as an Earth dragon

Appearance
Fei is..

Plot
Feirune was a dragon egg found in the Elroe great labyrinth by adventurers after they burned a certain spider's nest.

Trivia

 * Mirei was reincarnated as a human in the web novel, hence Feirune is a light novel exclusive character.