Ossan Boukensha Kein no Zenkou

Kein, a middle-aged adventurer, who while in the middle of herb gathering, found a rare item, a 『Resurrection fruit』.

Kein thought about selling it to turn it into money, but he met a girl seeking medicine to save her companion’s life.

She looked like Altena, his childhood friend who had already died. So he gave it away in exchange for small change.

Actually, the girl was the strongest adventurer Anastrea, who people called the sword princess. The next day, Kein suddenly got an invitation to join an S rank party, beats down the strongest and the worst monster, miraculously gains lots of money, and finally gets confessed by a 13 years old saint.

Kein’s simple life will change completely because of his encounter with Anastrea