Story
After 30 years of service as a hero in the kingdom, Alec was relieved of his duties, and he was at a loss. He was suddenly thrown out into the world without any common sense for normal living. He wondered what he should do, and came up with a plan: "That's right! Let's get a slave with the common sense that I don't have!" And that's how he met the simple but beautiful Sister Lilithia. Having found the kind-hearted Lilithia and learning to love her, Alec decides to live happily ever after as a common adventurer for her sake.
Synopsis via AniList (English).
