The Great Mage of the Hero’s Party Reincarnates Manga

A brief description of the manhwa The Great Mage of the Hero’s Party Reincarnates:

The battle with the arch-nemesis resumes after 300 years.
The genius wizard, Lynn, embarks on a grand journey, at the age of 13. Together with the party of heroes, led by Esther, they aim to defeat the great evil “Abyss” that intends to throw the world into chaos.
However, the battles becomes increasingly fierce and at the final moment, Lynn succumbs to the dark poison of the “Abyss”.
Leaving behind the words “I’ll be back”, Lynn’s soul falls dormant for 300 years, before being resurrected into the body of a boy of noble birth. Thus begins his second life in a peaceful world. But in the meantime, a dark force is brooding once again, threatening to plunge the world into turmoil once again.ore