@Gravewind
It was later mentioned that Orc and Fairy are allies during war.
One is a race specialize in physical combat while the other is magic specifically support spell.
Seeing this both races put an orc and a fairy in a pair to cooperate with each other. Normally most races would avoid teaming up with Orc because they will rape any female but fairy are too small for the orc so they end up becoming allies without even having to worry about orc natures.
Our orc Mc and the fairy is one of such pair, and they know each other for a long time.