Sakura (a down-to-earth chick), Akane (a loli), and Yuriko (an otaku) have been friends ever since they met in high school. They all wanted to become teachers and now that they've grown up somehow agreed on living together. The story depicts their lives as teachers.

Hiroyuki is a 16 year-old boy who is just starting a life of living on his own. He finds a great deal on a huge house for only 10,000 yen a month in rent. Sure the house is a little run down and perhaps even downright spooky, but it's better than nothing...until he meets Milky Way! Milky Way is a Demoness and she has her eyes set on making Hiroyuki her servant!