Azuma Kazuki, just returning to Japan after being away for 10 years, finds himself being arrested for no reason. He later finds out that the arrest was because of his mother and they believe that Azuma has "the heart" that everyone is searching for. What saves him is his childhood friend, a girl named Kogane Asabuki, and her Bubuki that became her right hand. Azuma's dream is to go back to his birth place, a floating island in the sky that he refers to as "Treasure Island".
Taki Tachibana is a teenager living in central Tokyo and Mitsuha Miyamizu is a high school student that lives in the countryside of japan. A comet is approaching Earth and is supposed to put on a spectacular show. Taki and Mitsuha begin to have strange dreams, where they start swapping bodies while they sleep, that is until one afternoon they completely lose contact.
Kodaka is being his usual dense self when it comes to the other members of the Neighbours Club. No matter how many times or what she does Kodaka can't seem to grasp the intense and passionate wantings of Rika. He is equally in the dark with Sena, Yozora and Yukimura. Putting his mass density to the side, the Neighbours Club is set out once again to make friends, and even attempt to make a movie for the festival. They nearly have the movie complete, but tragedy strikes! Also there's a rumour going around about Kodaka being betrothed to....
Arata accidentally touches Lilith's grimoire and it suddenly is enveloped by a bright white light. The light fades and there is a girl before them. She refers to Arata and Lilith as momma and papa, and they both start freaking out. They regain composure as they figure out that she is a grimoire that has both their magic infused into it. They name her Lilim. Later that night something changes in the world. The forbidden Eternal Library awakens. The library contained a dark secret, that Arata unknowingly unleashed; the White Demon Lord.
Kasuna Arata finds out that his home town was destroyed one morning due to a "breakdown phenomenon". He and his childhood friend are the only survivors, that is, until she starts disappearing before his very eyes. She has just enough time to give him a Grimoire before she disappears. Seconds later he is attacked by a mage that was sent to destroy him. Given two options of survival, either die now or have all his memories erased, he opts for a third option; become a mage himself! He vows to find his friend and thus undergoes extensive training. He also finds himself butting heads with an organization that is out to destroy the world!
Yato should have been named "The Struggling God" instead of "The God of Calamity" as he still is struggling to save money for his very own temple and to have enough followers to keep the temple fully functional till the end of time. Lady Bishamon is still after him; but the true story of how and why her first family of Regalia was destroyed by Yato comes into light. Yato disappears, and soon weeks turn into a month before... well almost enough time has passed that even Hiyori begins to forget about Yato. Yato himself is in dire straits as his former Regalia takes control of the situation and pretty well Yato's life and plunges them both into the underworld.
1939, the Imperialist Nation of Germania launched a sudden attack of its neighbouring countries. This attack engulfed all of Europe in one fell swoop, and the era was dragged into a maelstrom of war. A year later, Germania set its eyes on Elystadt, a very small principality that was blessed with breathtaking scenery and natural water from the Alps. Izetta is a descendant of a clan of witches that have passed down mysterious powers for generations. Since she was little, she and her grandmother moved from town to town, city to city to hide their powers from others. Fiine is the sole daughter in line to succeed Rudolph III, the ruler of the Principality of Elystadt. Since her father had been stricken with illness, she has been busy preparing for Germainia's eminent invasion.
Mochizuki General Hospital has some of the most well trained staff in town; though these nurses spend most of the day caring for the sick and wounded, their after-hours are quite different. In their after hours they fight a very different disease. Under the leadership of the hospital chairman, a handful of staff members and couple of local teenagers form a group of mercenary assassins, targetting the "cancers" of society and excising those individuals before their wicked cancer spreads.
Gabriel White just graduated at the top of her class at angel school and now attends a human school on Earth to obtain more knowledge. She finds herself becoming engrossed in a online game and decides that everything else is just to much trouble. She is also accompanied by another angel and two demons who also seek knowledge.
Humanity has been at war with the Unknown for decades now. In the beginning when the Unknown initially attacked, children were put into a "cold sleep" facility so that they would be safe from the Unknown. Decades later, some of the children were woken up and much to everyone's surprise they have superpowers that were named the "World". It is believed that whatever the children dreamed about while in "cold sleep" helped manifest their powers. The stronger the emotions that were tied to the dream the stronger the power they had when they woke up. These kids now help protect Japan from the Unknowns that appear from the Tokyo Bay, these kids would defend the strongholds of Tokyo, Kanagawa and Chiba.
Three months ago, Hayate was abandoned by his parents and was forced to work at the Sansenin Manor as a butler to pay off his parents enormous debt. Although being a butler for the elite rich can have its rewards, Hayate soon finds that every day is a challenge, and the challenges always seem to become ever increasingly difficult. Nagi Sanzenin is the otaku-crazed lady of the house and has near impossible demands, not to mention her friends and even her enemies. Not challenging enough? Well Student Council President Hinagiku Katsura suddenly begins to realize that she may have deeper feelings for the debt ridden butler than she thought.
Humanity is endangered once again. This time by creatures called the "bugged ones" who find human hosts to control. Once the bugged ones control a body, they give the body super speed and strength. They only have one weakness, our air. The air that we breath is very toxic to them. When Tamotsu Denkigai encounters one, he was brought to the brink of death, but was saved at the very last second by a girl named Matome Mayonaka.
A little over 10 years ago in Rimguard, a horrific incident left an unsolved mystery that had just now began to fade from peoples memories. As time passed, the sisters Yui and Rena are living peacefully in the Enastria Empire. Unfortunately that tranquillity was soon interrupted by a large mecha that appeared out of nowhere and starts attacking Enastria.
Mamori speaks softly and looks younger than her age of sixteen. She hates violence, but when seeing someone get hurt she is quick to react; even if that same person had hurt her. She stands up for what she believes in no matter the risk. When she met Mirei, her Liberator, she found she possessed the power to transform her body into a weapon.
Lady J has a very laid back personality. She is often quick to give you a smile in most situations, only when the situation is extreme is when she will become more serious. She is a hybrid Liberator and Extar, and her partner is Rain Hasumi. She is able to turn into a motorbike in her arm form.
Almost 60 years ago a strange plague of insomnia spread across the population, forcing almost everyone to stay awake for over a week. These victims, albeit extremely sleep deprived, went completely mad. To cure this illness, a hastily made medication was quickly introduced to the populous. Prolonged use of this medication had some real nasty side effects including bloodlust and vampirism. Humanity waged war against these new monsters and became victorious! Some of the monstrous vampires did however manage to survive. Born from a human and a vampire, Mi Liu is the leader of a bank heist that went terribly wrong. He and his gang were arrested and transferred to a special prison of the National Defence Agency that monitors Vampires. Trying to break free and save his companions, he is attacked by strange monsters and he also discovers that this "prison" corresponds to the birthplace of the Vampires, the old capital "Blue Town."
Anaslivan Dragon Academy is where young students go to learn how to co-exist and even battle with their dragons. Ash is one of those students, he is the only one that can ride any dragon, but has of yet been unable to summon his own. He does however possess the "star mark" that allows him to form a bond with his dragon, albeit it hasn't appeared yet. Through a slight miss-direct he stumbles upon a long ago crashed airship, and even worse someone with an intent to kill him for being discovered!
Nobody knows when or how "The Gate" was created. That being said nobody can actually access it either. In the not so distant past when "The Gate" was opened, it shattered and combined three realms. The realms of mortals, fairies and daemons collided, completely destroying world order and balance. The leaders of the three realms desperately try to restore peace and order, but some very talented mortals have begun to approach the gate, now known as "The Divine Gate." These three souls have deep wishes that yearn to be fulfilled and that is why they are heading to "The Divine Gate", so that they can have their happiness returned to them.
Yuichiro was reunited with Mikaela at the Shinjuku Battle, but to Yu's surprise Mikaela was turned into a vampire. To save the "family", and to protect his comrades, Yu needs to train and gain power. He is even trying to search for ways to bring vampires back to humans as well as training hard to obtain the most out of his cursed gear. While this is going on Kureto calls Guren and tells him a disturbing truth that the main unit of the vampire army will be attacking Tokyo.
An unknown virus wiped out most of mankind all that was left were children thirteen years old and younger. Vampires appeared out of nowhere and began ruling over the surviving children, turning them into livestock. Yuichiro Hyakuya survived along with other orphans by being forced to give their blood to the vampires. Yuichiro has a burning, almost unchecked hatred for the vampires, for what they've done and what they continually do to him and his friends. Yuichiro was able to escape and learned that what he knew about the world was completely false.
There are girls with special magical powers named Witches. These Witches are the only ones who can confront the Neuroi, an alien enemy of mankind that suddenly appeared in Europe in the 1930's. The Neuroi are very difficult to destroy with conventional weapons. In 1944, the Neuroi nest was above the republic of Gallia and was eradicated thanks to the Witches. Peace was restored in western Europe had been ensured. The allied forces began planning in earnest for an oppositional plan towards the central and eastern Europe. An order to scramble is given to the 502nd Joint Fighter Wing "Brave Witches" whose base is in Peterburg that is within the Russian Empire.