Invertia was a meteor storm that caused an unprecedented disaster during the 20th century. Because of this disaster, numerous cities around the world were destroyed. However, within the meteor, an unknown element called mana was discovered. It allowed human technology to make rapid strides giving rise to a new species of super-powered humans, the Star Pulse Generation (Genestella). The Festas (Star Warrior Festivals) host battles between Genestella at a city of six academies called “Rikka,” also commonly known as “Asterisk.” Scholarship student Ayato Amagiri transferred into Seidoukan Academy in order to fulfill his own wish, swearing he too will fight in this city.
The story follows Issei Hyōdō, a dim-witted, lecherous second-year high school student who is killed by a girl on his first date ever. Issei is reincarnated as a devil, and from that day forward, he serves as an underling of Riasu, a high-level devil who is also the prettiest girl on Issei's campus.
Some guys have no luck; he’s got no pulse. That’s life for poor unfortunate, undead Ayumu. First, he was murdered by a serial killer. Total bummer. Then he was resurrected as a zombie by a cute little Necromancer. That seemed pretty cool until she moved into his house, refused to speak, and forced his rotting carcass to do all the cooking. After that, a magical girl in a pretty pink dress used her matching chainsaw to chop his corpse in half. Luckily, the Necromancer’s powers of resurrection trumped those of the chainsaw chick, so instead of dying (again), Ayumu became the world’s first magical girl zombie. There’s also a voluptuous vampire ninja who thinks zombie boy’s a pervert – and a hideous crayfish demon who wants to devour him. Confused? All you gotta know is this: zombies, frilly dresses, demons, and moe chainsaws. Pink. It’s the new dead.
In the near future, in a world born of human imagination, what humans would call ghosts or monsters appear, and they come to be called "phantoms." Haruhiko Ichijō, is a first year at Hosea Academy along with his upperclassman Mai Kawakami, who fights phantoms with the ability "Spirit of Five Elements," Reina Izumi, who has the ability "Phantom Eater," and Koito Minase, who fights phantoms in solitude. They experience the ups and downs of high school life before a certain incident leads them to the truth of this world.
Demon King Daimao follows Akuto Sai as the lead character, who on the day he enters Constant Magic Academy, receives a very unexpected future occupation aptitude test result: “Demon King.”
"Hundred"—that is the only weapon that can oppose the mysterious life form "Savage" from visiting the earth. The protagonist, Kisaragi Hayato, aims to become a Martial Arts Master using this Hundred. He managed to get into the battleship university Little Garden. However— "I wanted to see you, Hayato!!!" "H-How do you know my name?" Around the roommate, Emil Crossford, who somehow knows him well (?), Hayato gets an uneasy feeling. What's more, just after the entrance ceremony, he gets asked for a duel by the campus' strongest martial arts master "Queen" Claire Harvey...!? The ultimate academy battle begins here!
An ordinary high school boy fails to get into any private academy except one — which happens to be populated by supernatural creatures disguised as humans. To survive, he has to pretend that he is one of them and blend in.
When the world is struck by a deadly pandemic that turns humans into zombies, Takashi Komuro and several of his classmates at Fujimi High School try to survive the apocalypse.