The protagonist is a powerful wizard, a sage-level magician who was ambushed and defeated. Upon dying, his spirit entered a dimensional rift and emerged 2,000 years later in a world where magic has declined, and his new body is considered devoid of magical power. However, knowing how to awaken his powers, he begins to retrain in magic. For those who love a strong protagonist seeking smart revenge, this story is incredibly exciting. Being reborn and having to use the knowledge and experience from his past life to train his body from zero is really fun to read. The revenge scenes are particularly satisfying.