Makabe Hiroshi, who liked science and invention, was supposed to move to the apartment which was owned by the parents of his childhood friend, Youko. There was a rumor that a ghost appeared in the room, but he decided to move because of very inexpensive rent. After his move was finished and when he was preparing for the party with Kotobuki who was Youko’s elder brother, the parts of the machine scattered around on the floor short-circuited and exploded. The explosion made a hole on the floor, and they found a strange jar in the hole. A snow fairy with blonde hair came out from the jar. Her name was Ruri. In this way, the cohabitation of Hiroshi and a snow fairy, Ruri, began suddenly.

Based on the game by M no Violet.
The elite doctor Kuwabara Souichirou couldn’t forget his feelings
towards Nanase Ren, whom he had loved in his youth. He changed the
hospitals he worked at, one after another, to look for her, and
finally he met her again at the St. Cattleya Hospital. However, her
attitude was remote and his love couldn’t be fulfilled. To make
matters worse, he received photographs depicting Ren being molested.
Ren had been turned into a lewd woman by Hirasaka through the woman
body experiment when she was at the St. Julianna Hospital. He was
disappointed and he lost his mind. Kazama Mana, who was a nurse of
the gynecology and obstetrics section, loved Kuwabara, and she
resembled Ren. Taking advantage of her feelings, Kuwabara raped her
and took her virginity while shouting the name of Ren.

A student gets his hands on a device that allows him to modify the will of any targeted female – he can bring out the lust and any hidden feeling from their minds and use it to his advantage. He attacks many of his classmates with this new power.

My husband, Keiichirou, was struck down by illness. Mr. Noyama, our family doctor, said he would need to have a rest for a while. But he hasn’t got well though a few weeks have passed. I have now a concern about myself. Yes, it’s about sex…. It’s impossible to ask for sex to my husband. I can’t masturbate myself at home because there are my husband and daughter. I can’t talk to anyone about it…. I recently feel sexually excited when Mr. Noyama comes to my house. Is this because I’m not sexually satisfied or I suffer from some kind of illness? Oh, Mr. Noyama comes again….

Based on the adult manga by Sawaru Erect.

Yuuto and Erika begin to live alone after their father’s job transfer to Sapporo. They are siblings, but not blood related, as Yuuto’s widowed father married Erika’s mother. Finding themselves alone, Yuuto and Erika initiate a sexual relationship, but Yuuto’s art teacher, Sayaka Ichinose, notices the change and takes an interest in what is going on.

It’s time for the local summer festival and Kentarou is accompanying Shizue, who has come to visit after being away for a few years. During the festival Kentarou leaves Shizue alone for a bit, and when he finds her again he sees a shocking scene…
Later, Shizue goes to a local photo studio to pick up some photos from the summer festival, and decides to do a bit of modeling while there. Before long Kentarou also joins…
(Source: AniDB)

Tachikawa and Komako take shelter from the sudden rain at a bus stop. Komako thanks him for the time he helped her have sex with Chie. She asks if there’s anything she can do to show her gratitude, and Tachikawa’s crotch bulges with anticipation.
Tenka runs away from home after getting into a fight with her family over her dream of becoming an idol. Tachikawa listens to what she has to say, and he starts feeling horny for some reason.
It’s summer vacation, and Chie is alone with Tachikawa in a classroom. He tells her to masturbate on the corner of a desk.