I Became The Rogue First Prince

Synopsis

Reborn as a sword, I lived for several hundred years, spending my entire existence looking after everyone. Then, out of nowhere, I took over the body of a fifteen-year-old uncouth first prince. The great knight once called the Undefeated, the Dragon Slayer who brought down the Mad Dragon, the Mercenary King, and more... I raised every single one of them. The Magic Sword Gruhorn possessed the body of the uncouth first prince...And has begun to write a new legend.