Tenkoku Yoichiro alone has had to take care of his house and younger brother Ryunosuke after the death of his mother. To better support Tenkoku and Ryunosuke, their father who was working abroad, had his company send a Kaseifu named Shirayuki to their house.

However, Shirayuki is not just a Kaseifu but also a Maid. How will Yoichiro's life play out with this new unexpected resident?