In A.D. 2031, humans are enjoying a prosperous existence until strange life forms called Hardians appear. They suddenly begin to multiply and assault the human population. As a countermeasure, mankind organizes the N.I.D.F. to investigate the Hardians and protect themselves. A fighter pilot, Aiba Shu, begins to become involved in the battle against the lifeforms. Rurika Yuno, one of Earth's foremost scientists, investigates the Hardians and hears rumors about the Book of a Dead Man. What is the secret of this tome, and what relation does it have to the Hardians? Now, the fight for mankind's survival begins. (Source: AnimeNfo)

Chisato Takatsukasa, a 35-year-old author, has such a youthful appearance that anyone would think him to be in his early twenties. His work is inspired by his idol—the best-selling mystery author Saki Shunka, who is as much of an enigma herself as the plots of the books she writes. Chisato is also the extremely overprotective father of 15-year old Riju, convinced that the friends his son constantly brings over are nothing but predators waiting for the perfect opportunity to defile his precious boy. As a result, Chisato will stop at nothing to ensure they never come over again, resorting to the most extreme of methods. There is not a man he hates more, however, than Riju's rather persistent best friend Shunsuke Sakaki, who just won't go away regardless of what Chisato tries to do. But the motivations of these characters lie as secrets bubbling just below the surface. Why is Chisato so wary of Riju's friends, and what exactly does Shunsuke know about the mysterious author his friend's father idolizes?

When a friend asks Natsuki what high school club she's going to join, she cheerfully responds the go-home club (meaning, she's not going to join any of them). However, she soon realizes that this club actually exists at her high school, and she's just expressed interest in joining it! Before she knows it, she ends up as one of the two new members of the go-home club, which is a small group of eccentric school girls. One of the girls likes fighting bears, while another is ridiculously rich. But what exactly constitutes the activities of the go-home club? (Source: MangaHelpers)

During Koyomi Araragi's second year at Naoetsu Private High School, he has a chance encounter with Tsubasa Hanekawa, the top honor student in his class. When they strike up a conversation, Hanekawa mentions a shocking rumor: a vampire with beautiful blonde hair and freezing cold eyes has been seen lurking around town. Happy to have made a new friend, Araragi writes off the rumor and goes about the rest of his evening in a carefree manner. However, on his way home, he stumbles across splatters of blood leading down the stairs to the subway. His curiosity pushes him to investigate further, so he follows the gruesome pools into the depths of the station. When he arrives at the source of the blood, he is terrified by what he sees—the rumored blonde vampire herself, completely dismembered. After she calls for his help, Araragi must make a decision, one which carries the potential to change his life forever.