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?

All of a sudden, they arrived: parasitic aliens that descended upon Earth and quickly infiltrated humanity by burrowing into the brains of vulnerable targets. These insatiable beings acquire full control of their host and are able to morph into a variety of forms in order to feed on unsuspecting prey. Sixteen-year-old high school student Shinichi Izumi falls victim to one of these parasites, but it fails to take over his brain, ending up in his right hand instead. Unable to relocate, the parasite, now named Migi, has no choice but to rely on Shinichi in order to stay alive. Thus, the pair is forced into an uneasy coexistence and must defend themselves from hostile parasites that hope to eradicate this new threat to their species. [Written by MAL Rewrite]

The story takes place in a future Akihabara where otaku culture has declined. Players play as a shopkeeper of an otaku shop. Together with the heroines who are in fact otaku girls, the shopkeeper start helping people claim their lost otaku memories back. (Source: QooApp)

In the year 2027, the video game Phantasy Star Online 2 is all the rage at Seiga Academy. Every student is on board the fad—except for Itsuki Tachibana, a well-rounded student who doesn't play video games. Due to its popularity, the game is currently under review at Seiga Academy to see if it has a negative impact on the students. Consequently, this causes Itsuki to catch the attention of Rina Izumi, the perfectionist student council president who aims to prove that the game is not to blame. To accomplish her objective, Rina recruits Itsuki as the student council vice president and tasks him with learning to play the game while keeping his grades up. Now obliged to report his daily findings of the game to Rina and analyze its merits, Itsuki carries the fate of Phantasy Star Online 2 in his hands. [Written by MAL Rewrite]