Despite being only 24 years old, Midorikawa Ran had already gained vast wealth from financial markets and retired early. She now spends her days chatting online and playing games, leaving household chores to her younger sister, Hikaru, famously known as Pandora. Although Ran finds her leisurely life satisfying, Hikaru realizes that they cannot continue in such a manner and takes a job at a maid café. As the protective older sister, Ran grows concerned and starts accompanying Hikaru to her job daily.
