Mistress Kanan is Devilishly Easy

Based on the erotic game by Terios. Five dangerous "seeds" have been stolen from their vault in the world of Evergreen and taken to Earth. Natsuki, an agent of the Queen, has been sent to retrieve them. However, he cannot do this alone and enlists the aid of Chihaya, a middle school student, who is "the only one" who can help him. With his aid she transforms into Magical Warrior Carmine in order to save the humans possessed by the seeds. Questions abound though, such as why Chihaya's mother appears to know all about this secret activity, why Chihaya remembers her father who reportedly died before her birth, and why she dreams of Evergreen, which she has never seen.

Kouta, a country boy who lives with his grandfather, is now moving to the city to attend high school. Changes come with his new home and new school, but nothing could have prepared the gentle young man for girls, specifically a bombshell fox spirit named Chizuru. As if her aggressive advances weren't enough, he also catches the attention of a frosty wolf spirit named Nozomu. Kouta is dragged into supernatural events as a result of his contact with the two girls, and his school life only gets more chaotic by the day. But with a girl who gives "foxy" new meaning and another howling after him, things are looking up for his love life.

Hobbies are often a great way of meeting new people, but how could Kakeru Diachi, who collects rare juice cans, have ever suspected that he'd meet a fascinating new girl when he attempted to DRINK her? Naming her Melon, because she's got great melon... soda, Kakeru quickly learns that she's an Akikan—a beautiful girl who's also a special can created to fight other Akikans in a strange experiment to determine what kind of container is better: steel or aluminum! Will becoming involved in this ridiculously twisted research project gone amuck complicate Kakeru's life incredibly? Of course it will, but because Melon's steel body needs carbon dioxide to breathe, he's now stuck with her since she's too CO2 dependent! And when his wealthy, attractive, best childhood friend Najimi gets HER own aluminum Akikan, the trouble really begins!

The protagonist, Naoya, is a first-year in high school. He asks out Saki, a girl he has been in love with, and she agrees to be his girlfriend. He's currently on cloud nine. But then, a beautiful girl named Nagisa comes up to Naoya one day and tells him that she wants to go out with him. Naoya feels himself wavering because Nagisa is such a good girl, and he comes to a decision! A new kind of romcom from a rather unexpected decision is about to begin!