Protagonist is a general office worker in a city. A lot of bad things such as company trouble have happened, the travel magazine is seen when i was thinking of something to change and a solo journey is started.
In the hot spring inn recommended by Rio a woman i met on the trip i meet for the first time in ten years with Kasumi, my favored older childhood friend. Protagonist decided to stay for a long time as a pretext of summer festival three weeks later.
With Kasumi of young proprietress of the inn, Rio of the same hotel guest, a local widow Michiru, the exchange is deepened with three charming married women...