Gakkoya

Light, a B-rank adventurer, was exiled because of his seemingly useless skill. But one day, he discovers the true power of his skill — the ability to rewrite stats. After maxing his stats to 9999, Light starts showing off his overwhelming strength, completely unaware that just a swing of his arm is now enough to kill someone… The day he accidentally takes a life, Light’s carefree days come to an end — and his life changes forever.