Summer, Cicadas, and the Girl

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.

Five women. Three surfers. One island. A summer they’ll never forget.
 
Margaret thought her birthday celebration with her girlfriend Arabelle would be simple—sun, laughter, and maybe a few stolen kisses by the beach.
But things take a thrilling turn when Arabelle reveals her real birthday surprise: Morgan, a world-class surfer with magnetic charm and a body sculpted by waves.
From the moment their eyes meet, Margaret feels a flutter in her chest—a rush she hasn’t felt since falling for Arabelle.
It’s confusing, it’s thrilling... it feels like falling in love for the very first time all over again.

Your younger sister, Tsukino Yuzuha, is an excellent student who excels in both academics and sports. Due to this stark contrast, you, an ordinary brother, have kept your distance from her. After the school's closing ceremony, you returned home and accidentally caught a glimpse of your sister in her underwear.

"You get excited by seeing your little sister in her underwear, Onii-chan?"

However, that honor student sister of yours... turns out to be a cheeky brat!

"Onii-chan, your summer vacation belongs to Yuzu."

Now, with this cheeky brat having leverage over you, and you being at her mercy... a sweet and naughty summer vacation between the two of you begins.

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?

Many women around the world have become infertile for some inexplicable reason. All hope for the continued survival of the human species has been lost... until now. During your summer vacation, you were forcibly taken to a hospital where it was explained to you that you have special semen that is the cure to the infertility issue. The salvation of many women depends on you. During your summer vacation, you are free to do whatever you like, such as getting a part-time job, falling in love and getting married, paying for girls with money, becoming addicted to gambling, and even committing crimes. Or, you can even save the world. This is your summer vacation after all, so spend it however you like! Explore various activities, including womanizing, sex services, gambling, tattoos, crimes, and interior decorating. Most women have certain conditions to meet, such as having the right techniques, a certain amount of money, or a particular weakness, in order for you to persuade them to have sex with you. Spy on, blackmail, or prank others. Commit crimes like stealing desserts or abusing authority, but beware of jail time. If the fear of a criminal record won’t hold you back- do as you please!