The story starts off with a face-off between two rival heroes, ZET and ALPHAS, and then traces their origins - Jin Kanzaki, a young man with the ability to transform into a superhuman being known as ZET, and Kouga Amagi, a young man with a strong sense of justice who uses technology to fight as ALPHAS.
The fates of these two men and those around them intertwine as they fight to protect mankind and destroy monstrous abominations known as Players, who ironically are the creations of the Amagi Corporation, the company founded by Kouga’s grandfather, Mitsugai Amagi.
In the blink of the mind's eye, Ryouta Sakamoto suddenly finds himself transported from playing the hit Btoom! video game to being stranded on a mysterious island, equipped with a day's worth of provisions, a bag of bombs, a strange crystal embedded in his left hand and a huge gaping hole in his memory. But it doesn't take long to figure out what's going on, especially after the first person Ryouta meets tries to kill him. Someone is attempting to recreate the ultra-violent Btoom! game in real life, and the island has been filled with an army of other unwilling players, each armed with one of the multiple variants of explosive weapons called BIM. Fortunately, Ryouta's an ace Btoom! player, but this insane version of the game has no reset switch or second lives, and there's only one way off the island: kill seven other people before they can kill you! Can Ryouta repurpose his game based skills fast enough to survive?
Kuronuma Sawako is completely misunderstood by her classmates. Her timid and sweet demeanor is often mistaken for malicious behavior. This is due to her resemblance to the ghost girl from "The Ring", which has led her peers to give her the nickname Sadako. Longing to make friends and live a normal life, she is naturally drawn to Kazehaya Shouta, the most popular guy in class, whose "100% refreshing" personality earns him great admiration from Sawako. So when Kazehaya starts talking to her, maybe there is hope for the friendships Sawako has always longed for. Maybe...there is even a little hope for some romance in her future.
Arrietty, a tiny but tenacious 14-year-old, lives with her parents in the recesses of a suburban garden home, unbeknownst to the homeowner and her housekeeper. Like all little people, Arrietty remains hidden from view, except during occasional covert ventures beyond the floorboards to "borrow" scrap supplies like sugar cubes from her human hosts. But when 12-year-old Shou, a human boy who comes to stay in the home, discovers his mysterious housemate one evening, a secret friendship blossoms. If discovered, their relationship could drive Arrietty's family from the home and straight into danger.
Mei Tachibana has spent her 16 years without a boyfriend or friends. One day, she injures the most popular boy in school, Yamato Kurosawa, due to a misunderstanding. For some reason though, it seems that he takes a liking to her and one-sidedly claims that they're friends. Furthermore, he not only protects Mei from a stalker, but does so with a kiss…?!!
It isn't the world you know. There wanders a girl with jet-black hair, ebony clothes, and a strikingly blue, glowing eye. Her name is Black★Rock Shooter. With a huge cannon in hand, she throws herself into a fierce battle...
Meanwhile, in another world, middle-school student Mato Kuroi is drawn to Yomi Takanashi, her classmate with an unusual family name. Mato does her best to talk to Yomi, who just won't open up. Yu Koutari mocks her best friend Mato's efforts but at the same time, supports her. Mato also finds herself surrounded by other colorful characters at school, like the eccentric school counselor, Saya Irino, and the hot-blooded captain of her club club, Arata Kohata.Then, one day, the window of opportunity opens. After Mato sees that Yomi has her favorite picture book, "Li'l Birds At Play", they strike up a conversation and Mato is invited to come over to Yomi's house. There, they gradually break the ice, until a girl in a wheelchair appears. This is Yomi's best friend, Kagari Izuriha...Two worlds. Mato and Black★Rock Shooter. This is the story of their "pain".
Furuya's not interested in the living, he's got zombies on the brain! When Furuya's cat dies, he decides he's going to try and bring it back to life. In the process, he stumbles across a girl who is involved in an accident and turns into a real zombie! What's Furuya going to do now that the thing he loves the most is right in front of his eyes?
