セフィ＝ライアード

One of Till's classmates, she bumps into him on the first day at Equites.  While she is smart enough to be class representative, she is inexperienced in other matters.  

Sefi's real name is Serafina Odorun, the Princess of Ederant.  She hides her true identity as one of the qualifications to succeed the throne requires her to graduate from Equites without anyone knowing of her true identity./