Lolibabas of Mayohiga

Every year the main character visits his grandfather who lives in the village.
There is no one there to play with at his age, so he wanders alone in the nearest forest.

Deep in this forest, there is a place called Mayohiga.
There is a tiny store, a temple, and three mysterious girls.
They use old words and old manners, and every time he arrives, he plays with them.

However, it seems that this year there is something wrong with them....