Treated as Failure by Nobles, Boy decides to unleash 1% of his power...

He joins the Magic Academy for a stable life, but the nobles call him a failure. Not knowing he is in D class because of his low academic abilities, but his powers are those of Hero Class - Manhwa Recap They thought He is the Same Weakling, but the Boy has Trained 100 :// Betrayed Boy survives in SS-Rank Dungeon for 3 Years & Became ://