In the year 2021, a parasitic virus known as "Gastrea" infects humans and turns them into monsters. What is left of mankind now lives within the Monolith walls, walls that are made of Varanium, the only material that can hurt Gastrea. To counter the threat that the Gastrea pose, "Cursed Children"—female children whose bodies contain trace amounts of the virus which grant them superhuman abilities—officially called Initiators by the Tendo Civil Security, are given partners called Promoters, people who work to guide and protect the young Initiators. These teams of two are sent out on missions to fight the monsters created by the Gastrea virus and keep them at bay. Black Bullet revolves around the team of Enju Aihara, an Initiator, and Satomi Rentaro, a Promoter, as they go on missions to fight the growing threat of Gastrea in their hometown of Tokyo. [Written by MAL Rewrite]

Hotaru Tachibana has a strong sense of justice and just cannot help confronting those who choose to perform malicious acts. Furthermore, Hotaru is actually a girl who likes to disguise herself as a boy. After hearing rumors that her best friend was tricked by the popular host of a local club, Hotaru seeks to punish the evildoer. Upon arriving at the club, however, she is challenged to a so-called "survival game" by the host Masamune Matsuoka, where the first person hit by the bullet of a toy gun will lose. After a destructive fight which results in Hotaru's loss, Masamune forces the young "boy" to join his survival game team named Toy Gun Gun, in order to repay the cost of the damages that "he" has caused inside the club. Although she is initially unhappy with this turn of events, Hotaru quickly begins to enjoy what survival games have to offer and is determined to pay off her debt, much to the dismay of Tooru Yukimura, the other member of Toy Gun Gun. As time goes on, Hotaru begins to develop a close friendship with the rest of the team and hopes to take part in realizing their dream of winning the Top Combat Game (TCG), a tournament to decide the best survival game team in Japan. Although Hotaru tries her best, there are just two little problems: she is absolutely terrible at the game, and Toy Gun Gun doesn't allow female members on their team!

The story follows a series of bizarre murders of schoolgirls who have been dismembered and stuffed into boxes. The private investigator hired by a missing daughter's mother joins forces with an antique book seller and others to unravel the murder spree. (Source: ANN)

Gyagu Manga Biyori is an anime that is about absolutely nothing. It is comprised of 12 short stories (5 minutes long each) that only build up a small amount of plot for each story. The anime feeds off the stupidest things, but is quite humorous.