Shio lost his parents when he was young and lived with his grandfather since then. When he is at border of death, he gives Shio the key to a house located in a village and tells him that he has the right to choose if he wants to live there. Thus, he goes to the village thinking that the house is abandoned, but he finds that five maids live there. Soon, another maid who came from the woods joins them. Shio starts living with them at the house and thus, his new life begins...

[based on Japanese Wikipedia]