Housewife Companion of the Hero!

In the town of "New Helio" in a certain fantasy world, a dungeon full of monsters suddenly appeared near a peaceful country one day!
To defeat the terrifying dungeon boss from which monsters keep overflowing, a hero was summoned from another world...!
The hero summoned from another world chose Eleanor, just an ordinary housewife, as his companion, aiming to defeat the dungeon boss!!