英雄と賢者の転生婚~かつての好敵手と婚約して最強夫婦になりました~ 2巻

[DeepL Translation - needs review] Volume 1 Introduction: The hero Raid and the sage Eluria have been fighting for a long time, but the battle ends abruptly with the death of the sage. Raid rides into the enemy country and dies a spectacular death in front of Eluria's body... and then he finds himself a baby and the world a thousand years later!

(Translator: DeepL)