嫌われ＜黒魔術師＞のやり直し〜勇者に裏切られ、両思いだった聖女と命を奪われた俺、過去に戻ってすべてを取り戻す〜

Moments before victory, dark mage Kai Austin is betrayed and loses everything. His death becomes a reset, sending him five years into the past—to the day of the class assignment ceremony—with all of his magic intact. Armed with max-level dark magic and every memory of the future, Kai refuses to let history repeat itself. This time, he will protect Colette, stop the coming disasters before they begin, and destroy those who once betrayed him. (Source: WEBTOON)