The protagonists are a brother who deeply cares for his younger sister, and a younger sister who adores her big brother.

The two, who lived in an old detached house, are transported to another world, house and all.

After their transfer, they discover that a portion of their detached house is conditionally connected to a newly built home... in Japan.

Though the siblings have gained overpowered abilities as a transfer bonus, they remain unaware of them.

Protected by their sturdy home, they defeat monsters using their overpowered abilities and level up just like in a game!

They live their new life in the other world, utilizing items from Earth and sending acquired items from the other world back to Earth.

This work is also published on Kakuyomu.