Reincarnation of the Hero Party's Grand Mage

Reincarnation of the Hero Party's Grand Mage summary:

용사파티 대마법사의 환생 / Yongsapati Daemabeopsaui Hwansaeng / The Great Mage of the Hero's Party Reincarnates / The Rebirth of the Hero's Party's Archmage / Reincarnation of the Hero Party's Archmage / The Great Wizard Who Was Revived After 300 Years / El renacimiento del archimago del grupo del héroe / Реинкарнация архимага из команды героев / 300年後に復活した大魔法使い At age 13, the genius wizard Rin embarked on a journey with Lista and the hero party to defeat the great evil known as “the Abyss,” which sought to plunge the world into chaos. But as the battle grew more intense, Rin’s body succumbed to the dark poison of the Abyss, putting his life in grave danger. With the words “I’ll come back,” Rin’s soul entered a forced dormancy, only to reawaken 300 years later as a noble boy. Starting his second life in a peaceful world, Rin discovers that on one side of the world, the destined forces of darkness are beginning to stir once more. --- 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. --- The warrior Lista heard the rumors about the great magician Rin, hailed as a genius for becoming the youngest 4-star mage. Lista recruited him to join her party to fight the forces of the void but, right before the final battle, Rin’s body succumbed to the void’s dark poison. As he drew his last breath, Rin cast an immortality spell, encasing his body in ice and promising Lista that he would return. Rin kept his promise and returned after 300 years--but reborn in the body of a noble boy.