The Hero of the Nation, Blythe, also known as the Sword Saint Blythe.
During wartime, Blythe saved the kingdom by leading his disciples with his unique swordsmanship. Now, he has reincarnated with all the memories of his past life as the youngest son of King Kilpus.

By the time he turns ten, Blythe, seeking freedom and the thrill of swordsmanship, skips grades and enrolls in the advanced division of the knight academy. That much was fine—until he discovers that one of the instructors there is none other than his former disciple, Lili Ituka, now a fully grown woman.

With the appearance of a child but the unbeatable mind of a seasoned man, he’s ready to thoroughly enjoy both swordsmanship and academy life!