After the death of his parents, Yuuto Amakawa lives a pretty ordinary life in the city. The only problem he has to worry about while attending school alongside Rinko, his next-door neighbor, is his cat allergies. That all changes on his sixteenth birthday, when an Ayakashi—a supernatural creature—attacks him for the sins of his ancestors. Luckily, he is saved by Himari, a mysterious cat-woman with a sword, who explains that Yuuto is the scion of a family of demon-slayers, and she is there to protect him now that the charm that kept him hidden from the supernatural forces of the world has lost its power. Omamori Himari chronicles Yuuto's dealings with the various forces of the supernatural world, as well as the growing number of women that show up on his doorstep, each with their own dark desires. Will Yuuto be able to adjust to his new "exciting" environment? Or will the ghost of his (ancestor's) past catch up with him?

A blog disproving the supernatural, co-run by NEET teenager Yuuta Gamon and his enthusiastic best friend Ryouka Narusawa, becomes the catalyst that would bring together a group of people who supposedly have nothing to do with each other. These individuals include high school fortune teller Miyuu Aikawa, who joins Yuuta to work on the blog; realist Sarai Hashigami, who is stunned when tragedy strikes his family; doujin artist Ririka Nishizono, who has an uncanny ability to predict the future with her art; black magic practitioner and local curse expert Aria Kurenaino and her ghostly friend; Shun Moritsuka, a seemingly childish otaku detective; and reporter Touko Sumikaze. As this unlikely group, bound only by the strings of fate, find their way to each other, they are confronted with murder and other events that are shrouded by the presence of the supernatural. They must band together to solve the mysteries interlacing the city and their lives. [Written by MAL Rewrite]

Shido Tatsuhiko is not only a private eye... he is also a vampire with no real memory of his past. Joined by Yayoi Matsunaga, a female government agent, Riho Yamazaki, an orphaned teenage girl working as his girl Friday and Guni, a little green imp, Shido must face demonic creatures known as Nightbreed. Meanwhile, Cain, the vampire who made him what he is now, is seeking him... (Source: ANN)

Lamune is an ordinary 4th grade boy who loves playing video games. He buys one from a peddler girl and helps her sell the rest. At home, he plays the game called "King Sccasher" & beats it. The peddler girl then comes out of the TV screen and asks for his help, calling him "The Blood Relative of the Chosen Hero Lamuness". She is Princess Milk and takes him to Hara-Hara World where his role is to revive the Guardian Knights. To do this, he had to find an unlock the shrine which held Tama-Q, a robot who became Lamuness' Advisor Robot, and key to freeing the Guardian Knights. All of the Knights are free-thinking mechas except for King Sccasher which is piloted by Lamuness. Opposing Lamuness is Don Harumage and his minions Da Cider and Lesuka. (Source: ANN)