Natsuyo ni Modaeru Nananin no Sasoime

Makabe Yuuto works at a tourism consultation company of his father's. The locations they have engaged in promoting so far have all become popular tourism spots, because of which their company is constantly busy with work they receive from among various self-governing bodies and hotel conglomerates. One day, Yuuto receives a consultation request on a new location.

It was work in a provincial Kyouwa City (Harmony City), however the city had two prospective locations that could be turned into tourist spots. Which one of them is accepted for the tourism project would be up to Yuuto's own investigation.

One location was in the mountain part of the city which boasted of fresh tasty water and onsens - previously known as Iwamuro Village.

The other location was a well-situated seaside town - previously known as Umitsubame Town.

Although neighboring Iwamuro Village and Umitsubame Town have become one city, residents of each look forward to the tourism bussiness and wish that their location was chosen. While Yuuto talks with people in both locations he comes to know many women, from whom he begins to accept tempting invitations...