Eiyuu to Kenja no Tensei Kon Katsute no Koutekishu to Konyakushite Saikyou Fuufu ni Narimashita

Reid a young hero with the strongest physical strength and Elria a beautiful sage with the strongest magic prowess
They continued to fight as rivals in opposing enemy nations but their relationship came to an end with the sudden death of Elria Then a thousand years later
Reincarnated in a world where magic reigns supreme but he who has retained the strongest physical strength from his previous life Reid was reunited with Elria who has also been reincarnated
Hey Reid I want you to marry me
Huh
The two who have become the strongest unaware loveydovey couple in a thousand years enrolled in the Royal Magic Academy to decide who is stronger