Yongsa Party Daemabeopsaui Hwansaeng

A warrior named Lista hears of a prodigy, Rin, who became the youngest 4-star mage. She brings him into her party to battle the void. Before the final confrontation, Rin’s body is destroyed by the void’s corruption. As he dies, he casts a spell that preserves his body in ice, vowing to return. Three hundred years later, he is reborn, now inhabiting the body of a noble child.