38-year-old Takanashi Mika is an ordinary housewife.

At Himawari Mart, where she recently started working, she is in charge of managing the 4th warehouse.

But this is no ordinary warehouse; it's a place where black devils emerge, a secret the supermarket would never want revealed.

This is the story of a part-time working mother of two who unwittingly journeys to another world, her adventure beginning before she even realizes it.

Armed with her trusty stainless steel rake and accompanied by her adorable companions, she explores the other world!

Her special attack is insecticide.

Take a peek into the adventure of Takanashi Mika, an oblivious, carefree, and unflappable housewife.