Summer: Inaka no Seikatsu  

SUMMER ~田舎の性活~

The summer season has finally arrived, and although the protagonist was initially unenthusiastic about it, his plans changed when an old friend called him to ask if he could take care of their daughter, hazuki, while they went on a trip with her husband. although hesitant at first, the protagonist agreed because anything was better than being alone in his flat all summer long. however, upon meeting hazuki again, he noticed that she had undergone significant changes. she had grown taller and her breasts were larger as well.