I Was Exposed as the Strongest Magician to My Sister, Who Has Severe Brother Complex. I Can No Longer Hide My Abilities at School!

Sleeping and lazing around all the time. Such was the indulgent life chosen by Alvin, the son of the Astarea Duke’s household. His father was the commander of the Kingdom’s knight order, his mother a former vice commander of the magic division, and his non-biological sister held the top position in the academy, serving as the vice commander of the academy’s knight order. All members of his family were outstanding. Perhaps due to this, everyone around him ridiculed Alvin for his indolent lifestyle, calling him the ‘stain on the Duke’s family’. However, Alvin paid no mind to such ill-repute. “Because a lazy life is so much more wonderful!” Little did they know, Alvin was, in fact, the stro...