I Became the First Prince: Legend of Sword's Song

I was reincarnated as a sword and lived for hundreds of years, spending my entire existence cleaning up after others.Then, out of nowhere, I ended up taking over the body of the fifteen-year-old First Prince—a notorious good-for-nothing.“How many do you think I’ve raised?"The great knight once called invincible, the Dragon Slayer who brought down the Mad Dragon, the Mercenary King...I raised every last one of them.The magic sword Gruhorn, possessing the body of the rogue First Prince... this is the myth he begins to write anew.