since gau is the only survivor of his village, elle takes him with her. originally, gau only intended to follow elle in order to steal all her money and discover the source of her powers. however, after some time, gau came to care for elle like an older sister. over the years, gau has trained side by side with elle in an effort to become strong. with his dedication and signs of promise, he quickly catches the attention of the 57th sevaar, scarface, who decides to help gau improve, albeit only indirectly. many incidents that gau encounters are in some way or another engineered by scarface, for the purpose of driving him to improve and become stronger.