Sword Emperor previous life, Prince Trash this life.

In the past, there existed a swordsman who devoted his life completely to the art of swordsmanship, meeting his ultimate fate through his sword. After a prolonged duration of fighting and battles, the swordsman purposely chose to depart from this world, only to be reborn as the third prince of Diestburg, Fay Hanse Diestburg. Wishing to remain detached from his previous existence, where his sword controlled his every move, Fay opted to lead a meaningless and reckless life, earning him his moniker, Trash Prince. Nevertheless, after being summoned to lead the reinforcement troops in a battle due to their agreement with the neighboring Afillis royal house, Fay's dulled senses are revived. On the battlefield, he is confronted with the dismal reality of the "Hero," possessing an unparalleled power, leaving devastation in their wake. Witnessing a knight's death ignites a spark within Fay's heart, prompting him to pick up his sword once again. Thenceforth, the epic chronicle of the indolent yet unbeatable prince commences.