Reincarnation of the Unrivalled Time Mage: The Underachiever at the Magic Academy Turns Out to Be the Strongest Mage Who Controls Time! #009 Shusui Ha

With no money to his name, a poor student stumbles upon magic that lets him control time—Now it's time to to prove to the magic school that he has what it takes to be unstoppable in this fantasy manga!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.He has a lot on his riding on this duel, as he depends on the scholarship from the school to look after his frail, blind sister. Despite training as hard as he could, he ends up passing out from overexertion. The event triggered a dream in which he was a legendary mage in a previous life, using the now extinct “time magic” to rough up some demons!And to his surprise, when Arvis woke up from the dream, he can now use this legendary time magic?!