Reincarnation of the Unrivalled Time Mage: The Underachiever at the Magic Academy Turns Out to Be the Strongest Mage Who Controls Time!

Arvis is a poor, low-achieving student at a remote magic school. One day, he was given the impossible task of defeating the smartest student in his school, or else he will be expelled. Arvis looks after his little sister who's blind and frail, and depends on the scholarship from the school to surviv