Humans, fairies, dwarfs, and beastmen. Laurencia is a remote island where the four races live happily without conflict.
That peace was brought about after the four tribes united to challenge the "Demon King", who once came from the mainland and ruled the island with fear and despair. They were able to defeat and seal him in after a having won a fierce and painful battle. Several hundred years have passed since then. The threat of the Demon King has been forgotten in the prosperity supported by advanced magic technology.
One day, an earthquake occurs that shakes the entire island. The epicenter of the earthquake is the dungeon called "Zvinga" where the Demon King was sealed. The four tribes fear that this might be a sign of the resurrection of the Demon King. The protagonist, Bernard, a descendant of the mage who created the ward, is ordered to investigate it.
There is a dormitory at a private school for training high-class ladies, where students are trained secretly 'To Serve Men'.
However, one of the students got pregnant during the training.
To prevent this from becoming a scandal, the pregnant student was expelled and the dormitory was shut down in fear of causing another incident. Many years passed and now the decaying building is awaiting demolition.
The protagonist, the bastard child of the accidental pregnancy, negotiates with the current principal of the school using the story he heard from his mother.
He negotiates to reopen the dormitory, and work there as a manager.
He only has one goal in mind.
To drain the slaves he has raised and taste their milk.
So the dormitory known as the 'Mistress Administration Building' has been revived by the protagonist. The building will be transformed into the 'Slave Management Building; where the sounds of schoolgirls being trained and milked will echo throughout the night.
In the residential district Kamiitsukomachi's old shopping district lies Hibikino Shop. This general store closed down after the grandfather owning it finally retired.
His three granddaughters, attached to it, and unwilling to let it disappear, decided to renovate it.
Hibikino Shop, loved by its community since 50 years, under the pressure of Yukari, the good for nothing of an eldest sister, became... an eroge store!
Hibikino Shop finally reopened.
A store of this size being too much for only three sisters to handle, and with only Yukari to know about this peculiar kind of products, they asked the second daughter's childhood friend Kurama Ren, our hero, to help them, as a part-time worker.
This is a story about the eroge industry from the perspective of a salesclerk.
Minase ── an isolated island due to its poor accessibility. However, the protagonist used to go there a lot in his childhood.
After entering medical school, his parents were worried about him losing his edge due to the daily study schedule. They wanted to refresh him. The protagonist comes to the island again after being advised to visit his cousins during his summer vacation. He remembers his childhood with them, and being treated like a real family member.
Suiren was beautiful when she was a child, and she was very kind and was like a real sister to him. Shion was like a tomboy little sister and used to follow him around.
The protagonist wonders how the two of them have grown up. He can hear their voices afar from their house. Upon his arrival, he reunited with the two grown-up sisters.
Suiren has become a gorgeous woman with a beautiful feminine body overflowing with tolerance and kindness. Shion, who has grown into a pretty girl, has a somewhat disgruntled look and only talks to the bare minimum necessary.
An older sister who never changes and a younger sister who has changed. Feeling puzzled, as recommended by Suiren, who seems to have been waiting for the main character, the protagonist stay at their house for a while.
How will he spend his time with them on the island under the summer sun?
"Hello Boku-chan, can you please teach us about this world?"
Two adventurers that said they were from a different world came to my rescue when I was being attacked by monsters in the mountain.
Arin, a cheerful elf that can easily become friends with anyone, and Lulu, a slightly shy but still very gentle beastfolk.
The two of them were troubled, with no way to return home or a place to stay.
"If you don't have anywhere to go to, come to my house!"
I asked my mom so we could help my saviors and lent them an old house that wasn't in use.
Everyday I spend looking after the two of them is very enjoyable and exciting (though there were also some very embarrassing days...)
One day, I heard that they came to me looking for a husband, and I started feeling a different kind of excitement...
What is this feeling...
Can these two Onee-chan teach me?
The main character "Itsuki" loves his mother "Aoi" as a woman.
Itsuki was masturbating almost every day to digest the uncontrollable feelings.
One day, Itsuki was inadvertently seen masturbating by Aio.
It's awkward and if things go as they are, Itsuki will attack his mother by mistake.
With that in mind, Itsuki starts living alone when he goes on to school.
Living alone for the first time went smoothly.
However, although it is easy, Itsuki gradually miss his mother.
Meanwhile, Aio visits the house to see what's going on ...
Hundreds of years have passed since humanity began to immigrate into space. Humanity has spread too far and created their own agendas and interests. Soon enough, war occured with the usage of battleships and robots.
The protagonist was once an excellent test pilot. Now, he is a humble mechanic after an accident forced him to be transferred.
Unable to quit the army, he spent his days aimlessly. Soon, he was assigned to a newly established battleship that focuses on reconnaissance and collecting data.
However, during maintenance, he discovered a secret hidden in the ship. One that caused him to shake in anger. And the words that appeared in front of him.
'Please enter what you want me to do'.
That changed the fate of the protagonist in the future.
