The Male Lead's Dad is So Handsome It's a Problem

Bearing the memories of my past life, I lived as an ordinary servant in a baronial household. I thought it was just reincarnation, but it turned out to be possession. And it was long before the original story even properly began, in the generation of the protagonist's parents! 'Could it be that our young master... is the father of the original male lead?' That meant Carden, the hero who saves this world from destruction, was the young master's son. It was surprising, but honestly, I didn't feel much of a sense of crisis about the world's destruction or anything like that. If the young master safely marries the original male lead's mother as in the original story, and if the male lead is...