A doctor is hired by a woman he had raped in his past to help create a special “treatment room” for special patients. They hand pick a group of beautiful, young girls with problems and prepare them for training.

After years of yearning for Eclaire, my desire was bursting!
I was a Sorcerer who quested with a weak Cleric girl.
We were a good team. But over time I failed to level up,
and she graduated to a higher class. She’s strong
enough to be the hero now… I’m about to lose her!
“I can quest alone now! Isn’t that great?” she says…
Nooooo, Eclaire! Don’t go! I’ve done everything for you…
Was I only used? Was I just a grind partner?
If so…

Arahama Yuu has 5 sex-friends. One day, his easygoing sex-life reaches a precipice. One of his partners, Shimizu Misako, who is also a co-worker at his company, had been sleeping with him on the understanding that they would marry. However, he only considered her a sex-friend, and even revealed the existence of the other 4. Incensed, she has him gather the other 4 together in his apartment.
Shimizu discovers that Arahama has surrounded himself in the company of many beauties of differing personalities. Besides herself, the others are: Yanagi Ryouko who runs a cafe near Arahama’s apartment; Hoshino Kotori, a schoolgirl of his acquaintance; Endou Makiko, who manages a large company; and Kamishima Aina whom he met on an on-line dating site.
Shimizu demands that Arahama ceases having casual relations and marries someone. However, the situation get heated and confusing until Arahama somehow ends up proposing to all of them.
In the days that follow, Arahama visits each of them individually in an effort to withdraw his marriage proposal.

When Tashiro Shinji, a poor student, is sleeping in his apartment, a beautiful girl appears in the light. In addition, she is sleeping naked. Actually, she is an alien, Yuria, who came to the Earth looking for her elder sister.

Based on the game by Crossnet-Pie.
Ichijou Daisuke is a new teacher at Kisaragi Academy, an all female school, and he is assigned to be a job counselor. To find the appropriate job for students, he role-plays with the girl students who wear various uniforms such as a nurse, a shrine maiden, and so on.
Source: AnimeNfo

You woke up to find yourself lying on the bed of the nurse room.
Then you saw a sexy feminine doctor; she was looking you down with her beautiful eyes.
She started examining you to give you a “special” treatment you hoped for…

Based on the manga by Seto Yuuki.
Tomohisa and Endou aren’t either so handsome or ugly; they are just normal boy students. They’re looking at Mizuho, the senior student, and Mikura, their classmate. Mizuho is a returnee student, and she attracts all the students by her beauty. Mizuho notices their eyes, and she gives Tomohisa a suggestive look.
One day, Tomohisa finds a note in his desk. It says, “I’m waiting in the ladies’ room on the third floor”. He goes there and finds Mizuho is waiting for him…
The next day, Tomohisa can’t help recalling the event the day before. He happens to find that Endou is gone, and also Mikura, whom he loves secretly, is missing, too. He’s afraid that they’re doing things. However, exactly, they’re doing things on the fire escape.

In the kingdom of the Elves, there were strict rules regarding who was allowed to breed.
However, a single human with a particular power is going to put all of that into question…