From Wikipedia: Enno Ozuno, Master of the Enno temple used the demon guardian spirit Zenki to defeat the demon goddess Karuma. After defeating Karuma, he later sealed Zenki away in a pillar until needed again. Centuries later, his descendant, a school girl named Chiaki Enno (役 小明, Enno Chiaki, or Cherry Night in some dubs) is able to free Zenki, although the demon currently has the form of a brattish demon child. To transform this extremely defiant demon into the form that made him useful by her ancestor, she uses a bracelet that appeared on her wrist when servants of Karuma broke the seal that imprisoned a seed of Karuma. Zenki appears because the seeds of Karuma (which look like eyeballs) start appearing and turning people into monsters and Zenki needed again to eradicate this menace.
From MangaHelpers: In this world, there are those who look like humans but are actually beings with supernatural power. In order to respond to crimes committed by these kinds of people, an organization that employs some of their number has been established. Kurohimeyama Eve is a member of this organization, and she is also a teenage girl that has "Oni" powers. One day, she goes to meet a new member, Ichizuka Senya, who is a boy with dangerous shadow powers and a bad personality. In front of the other girls in the organization, though, he seems to act perfectly nice. What's even worse, he's transferred into her private religious school! Kurohimeyama's once-peaceful life will never be the same! [tethysdust]
From AnimeWaves: A young boy gets saved from drowning by a mermaid but according to mermaid law, if a human sees a mermaid's true form, both are to be executed. The only solution to the problem is for him to marry her and become part of the mermaid family.
Based on the Shin Megami Tensei If videogame. The setting is Karukozaka High School, which is mysteriously sucked into a void and emerges in the realm of Makai, a world of demons. Most of its students and school employees are trapped in the other world along with it.
Two-shot about the moon rabbit and his adventure as a human sent to rejoin a broken red string of fate.
Honey Kisaragi is a normal catholic schoolgirl. That is, until her father was murdered by the Panther Claws who were seeking the Airbourne Elemental Fixation Device. She then finds out that she is actually an android created by him with the Airbourne Elemental Fixation Device within her. She is now trying to live a life as a normal schoolgirl and seeking revenge against Panther Claw.
Taku, the boy with a black cat. He uses medicine that cannot be obtained through ordinary means. He is a self-proclaimed Kusuri-ya.
Ja-gi Park, a high school teacher and diviner, wakes up from a vivid dream foreseeing a mass suicide set to happen in 10 days. It's up to her and a group of time manipulators to help prevent this tragic fate from happening before time runs out. However, as days pass by and mysteries unravel, Ja-gi realizes there's more to her premonition than meets the eye.
In a small port town, there’s an old legend that sometimes, a cat will take the form of a human boy and choose a lonely girl to live with. The cats call these girls “witches” because only they can see the cats in their human form. This is the story of those witches and the cats that live with them, as they share their warmth, lick each other’s wounds and try to find the magic called “happiness”, one step at a time.
The psychic comedy follows an ordinary (virgin) high school boy named Yoshirō "Yocchan" Kamogawa. His life changes overnight when he wakes up with the ability to read other people's minds. Yoshirō is not the only one to gain powers in his town. Teru-oichan, an (apparently virgin) worker at a café near Yoshirō's school, gains telekinesis — but he uses it for sex toys. Yōsuke Enomoto, a (probably virgin) senior and former basketball player at Yoshirō's high school, gains teleportation — but only while naked.
When a fancy house is built, the rumors fly. But what is the truth behind the devil and the angel, or the mysterious boy?