My sexual harassment is a summer vacation that conceives a cousin who generally forgives me

This is an animated summer vacation RPG where a young boy, the protagonist, is sent to a rural island where his aunt lives during his summer break.
While enjoying his vacation, he grows closer to the older girls, his aunt, and the local children on the island.

At the end of summer, Rio, Kaoru, and the protagonist head to a villa near the sea. Since it’s off-season for vacations, there’s absolutely no one around. So, under the still hot sun, they expose their tanned skin and decide to spend time completely naked. Dressed like this, there’s really only one thing to do! A vacation for all three together begins.

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.

In the game, various patients come to the hospital every day. More new patients are admitted by expanding facilities, and difficult and complicated diseases are treated by researching new technologies. While operating, you can also interact with nurses and doctors in various ways. Every girl has weaknesses, and you can attack them by finding their weaknesses. Whether to make the hospital an ordinary orthodox hospital or a place to provide special services for members. Everything depends on you.

Enomoto Ryoka is a childhood friend and the ace of the girls' basketball team.
They grew up together in a rural village, and she was the girl he secretly loved --
 
What kind of acts did she endure?
 
How did those filthy men connect with her body?