My Spirit Beast is a Primordial Rank

A 16-year-old boy name Cassian is just your normal teenage highschool boy attending at the Beast Magus Academy or for short B.M.A Academy, his childhood rival, Felix Augustine , he lives in a royal life and he was been called by the people in his kingdom as the "Child Prodigy", in their school, all the students support Felix for his very talented mind and he owns a Mythical Rank Beast, Cassian felt like a loser in his school, and Cassian always thinking that the world is unfair. Until he met Sakaros, The True Embodiment of Envy, she'll going to help him to fight against the "Lord of Evil" Ayin for him to become the "Lord of Boundaries" by killing her. Little did he know that he summons a "Primordial Rank" Beast, one of the most highest rank among the Beast System. ——————————————————————— Note: (the ranking and the power system will later reveal as the story progresses, but don't worry I will write about it after I publish 5 chapters of this novel.)