I Happen to Know What You Said

Once known as a living textbook, the creator of rune magic, a powerful magician who has been immortal for thousands of years, he was once the only face of the country facing collapse - "Elegy". Now, he has once again returned to the year when he was a teacher in the school. At that time, he was still a weakling who allowed others to bully him, but after experiencing the cruel war, this time he just wanted to be an ordinary teacher and live a life of making money and having enough to eat. It's just that he is familiar with history and can always prevent bad historical events in advance. He is familiar with magic formations and has knowledge all over the world. He is familiar with the future and can always inadvertently create future technologies that can change the world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.