Read The Knight Who Only Lives Today manga, also known as Eternally Regressing Knight, which tells the story of Encrid. When Encrid was a child, people called him a genius, but those words were like poison. He dreamed of becoming a knight, but soon realized it seemed impossible. People laughed at him and told him to give up. Despite this, Encrid kept his dream alive. He slept less, ran more, and trained harder. One day, he was killed by a stab to the neck. But then, Encrid woke up to find it was the same morning again.