That Summer, I NTR'd My Friend's Girlfriend

Your friend offers to let you stay at his place for a few days while your house is being renovated. Good guy. To make things more pleasant, he also invites his girlfriend to stay with you. She’s sweet, kind, a good girl… and with curves that heat you up inside and out. Your friend is old-fashioned, the kind who wants to stay pure until marriage.
But she’s starting to show doubts, curiosity… and she seems far too comfortable around you. What began as an innocent favor turns into tension, desire… a game as hot as it is dangerous. You know it’s wrong, but some things can’t be avoided, no matter how hard you try.
Not every choice ends the same… nor with the same satisfaction. Choose wisely.

In a quiet, somewhat remote town, Hannah lives with her father and younger brother. Eventually the summer break comes, and with it the question: "How to spend the last summer before her senior year in high school?" Explore Hannah's town and its surroundings, and find out what opportunities may hide there.

GIRLFRIENDS: OFFICE! — is the ultimate animated clicker with of charming and sexy office girlfriends! By day, they work hard in the office, but by night, they reveal their deepest desires and fantasies. Help them unwind and become part of their spicy adventures!

It's the last summer break before you and your loving girlfriend, Mia go to different colleges and enter a long-distance relationship. She's always been the perfect girlfriend...but when she gets a job at a summer internship you start noticing changes in her behaviour that gradually make you question everything you knew about her before.

Residential areas, farmland, and mountains in the distance. Although it is hardly a remote area
It can never be called a city. It is a country town that can be found anywhere.
The protagonist returns there at the height of summer and takes a job as a live-in temporary worker at his former alma mater.
He takes a job as a live-in janitor during the summer vacation.
There, he meets his niece, Takanashi Takanashi, who has moved there after her parents’ divorce.
Otsuwa (Takanashi Otsuwa), who moved there after her parents divorced,
Rino Akatsuki, her older childhood friend.
Rino Akatsuki, her older childhood friend. Otoha is a transfer student taking remedial classes,
Rino had to attend school during the summer break for club activities.
They used to play together as babysitters in the past.
The relationship between the three reunited girls was not the same as it had been back then, but had changed slightly.
Was it simply because they had grown up, or…?
A chance encounter with Otowa and Rino,
The protagonist begins to develop a special relationship with Otowa and Rino.