I'm broke, unpopular, and unmotivated. I live a lazy, stagnant life. One day, while lounging in bed, I get a notification on my phone... "Your little sister will take care of you 24/7? A lovey-dovey life?" What?! I sign up for something called "Little Sister Catering"... and a beautiful, fair-skinned, busty girl with short hair, Ruka-chan, actually comes to my house. Ruka-chan does the housework and cooks for me... she's so...