A Certain Magical Index

Set in a city of scientifically advanced superhuman students, but in a world where magic is also real. Touma Kamijou’s right hand, the Imagine Breaker, will negate all magic, psychic, or divine powers, but not his own bad luck. One day he finds a young girl hanging on his balcony railing. She turns out to be a nun from the Church of England, and her mind has been implanted with the Index-Librorum-Prohibitorum - all the magical texts the Church has removed from circulation.

Toradora!

Ryuuji Takasu is a gentle high school student with a love for housework; but in contrast to his kind nature, he has an intimidating face that often gets him labeled as a delinquent. On the other hand is Taiga Aisaka, a small, doll-like student, who is anything but a cute and fragile girl. Equipped with a wooden katana and feisty personality, Taiga is known throughout the school as the "Palmtop Tiger." One day, an embarrassing mistake causes the two students to cross paths. Ryuuji discovers that Taiga actually has a sweet side: she has a crush on the popular vice president, Yuusaku Kitamura, who happens to be his best friend. But things only get crazier when Ryuuji reveals that he has a crush on Minori Kushieda—Taiga's best friend! Toradora!</i> is a romantic comedy that follows this odd duo as they embark on a quest to help each other with their respective crushes, forming an unlikely alliance in the process.

Aria the Scarlet Ammo

Aria is a volatile girl who’s top dog in assault at a school for young mercenaries. When she discovers her classmate Kinji’s an ace, she strong-arms him into being her partner, but she isn’t the only femme fatale who wants a taste of his combat skills. His secret? He’s only a hotshot when he’s turned on! Aria gets Kinji for one mission, but he’ll end up with more than one finger on his trigger! (Source: Crunchyroll)

Noragami

Minor god Yato is down on his luck. Fed up with his slacker lifestyle, his partner abruptly quits. He has no money, no worshippers, and no shrine to call home. But just when things are starting to seem hopeless, a bus accident forces him to cross paths with Hiyori Iki, a sweet and perky high school girl. After the accident, Hiyori's soul has a bad habit of slipping out of her body, and after enlisting Yato's help to get her back to normal, she begins to fall into the world of spirits and gods. But Hiyori's not the only one who's keeping tabs on Yato. A god from Yato's past is back, and he's not interested in a friendly reunion. (Source: Funimation)

Fate/stay night

Raised by a mysterious sorcerer after the death of his parents in a catastrophic fire, Shirou Emiya has only just begun to learn small tidbits of magic. When he is caught in a battle between two powerful Magi, however, he ends up performing a spell above his expected ability, accidentally summoning a beautiful woman knight to protect him. Shirou is thus unwillingly thrust into the competition known as the Holy Grail War where Seven Magi called Masters, together with their spirit partners called Servants, fight to acquire a powerful artifact said to grant every wish.

Bleach

Ichigo Kurosaki is a rather normal high school student apart from the fact he has the ability to see ghosts. This ability never impacted his life in a major way until the day he encounters the Shinigami Kuchiki Rukia, who saves him and his family's lives from a Hollow, a corrupt spirit that devours human souls. Wounded during the fight against the Hollow, Rukia chooses the only option available to defeat the monster and passes her Shinigami powers to Ichigo. Now forced to act as a substitute until Rukia recovers, Ichigo hunts down the Hollows that plague his town.

Pandora Hearts

Oz Vessalius, heir to one of the duke houses, has just turned fifteen. His life is rich and carefree, darkened only by the constant absence of his father. At his coming-of-age ceremony, however, everything changes. For no reason that he can discern, he's cast into the prison known as the "Abyss", only to be saved by a "chain" known as Alice, the bloodstained black rabbit. It is unknown why was he cast into Abyss, how does Alice factor into it all, and what does the organization known as "Pandora" want with him. (Source: Anime News Network)

Soul Eater

Set in the Shinigami technical school for weapon meisters, the series revolves around 3 groups of each a weapon meister and a human weapon. Trying to make the latter a "Death Scythe" which is the highest title for a weapon and thus fit for use by the Shinigami, they must collect the souls of 99 evil humans and 1 witch. Maka &amp; Soul Eater, Black Star &amp; Tsubaki, and Death the Kid with Patty and Liz Thompson are the characters Soul Eater revolves around. Besides taking the time to gather souls, these students of Shibusen defend Death City from some of the most powerful of creatures while still attending school and trying to become stronger.

Hayate the Combat Butler

Hayate Ayasaki's life wasn't great, but when he loses the job he used to support his good-for-nothing family, and his deadbeat parents sell him to the Yakuza for cash, it really hits rock bottom! Faced with having to pay off the huge debt before he's converted into black market organ parts, a desperate Hayate decides to kidnap oddball heiress Nagi Sanzenin for ransom... but when even that goes wrong and he accidentally ends up rescuing Nagi from other kidnappers, it turns out that Hayate is the bodyguard that Nagi has been looking for! So now he's the Sanzenin family's butler, and… maybe… it might be the start of a potential romantic relationship… assuming Hayate can survive the on-the-job training, of course. (Source: Sentai Filmworks)

Arms Alchemy

The story begins when high school student Kazuki Muto is killed one night saving a mysterious girl from a monster, only to wake up in his school dorm, believing it to have been a dream. However, he soon finds out that dream wasn't a dream at all when a giant serpentine monster attacks him and his sister. Tokiko Tsumura, the girl he saved, explains that the monster is a homunculus. Kazuki had been attacked and killed by it when he was rescuing her. However, she, feeling responsible for him, revived him by placing a Kakugane medallion in his chest, serving as a replacement heart. The Kakugane, as Tokiko explains, is an alchemical device that, when activated, takes a certain form based on the Kakugane's user, forming a unique Buso Renkin. The Buso Renkin is the only thing that can destroy a homunculus monster. Using this, Kazuki creates his own Buso Renkin (the "Sunlight Heart", a huge lance). Along with Tokiko and her own Buso Renkin (the "Valkyrie Skirt", an execution scythe), Kazuki joins the fight against the homunculi and their master.

D.Gray-man

Towards the end of the 19th century, Allen Walker officially joins the organization of Exorcists that destroy the beings known as Akuma; mechanic weapons made by the Millennium Earl with the suffering souls of the dead. Allen has both a cursed eye and an anti-Akuma weapon as an arm, bearing the power of "Innocence", a gift given to him as an apostle of God. Allen, along with his fellow Exorcists must put a stop to the Millennium Earl's ultimate plot that could lead to the destruction of the world and all who live on it.

Puella Magi Madoka Magica

One night, 14-year-old Madoka Kaname has a terrible nightmare - against the backdrop of a devastated city, she witnesses a girl fight a losing battle against a dreadful being lingering above, while a cat-like magical creature tells Madoka the only way to change such tragic outcome is for her to make a contract with him and become a magical girl. The next day, the teen's dream seemingly becomes reality as the girl she saw in her dream - Homura - arrives at Mitakihara Middle School as a transfer student, mysteriously warning Madoka to stay just the way she is; but when later on she and her best friend Sayaka encounter the same cat-like magical creature from her dream - who introduces himself as Kyubey - the pair discovers that magical girls are real, and what's more, they can choose to become one. All they must do is sign a contract with Kyubey and agree to take on the duty to fight abstract beings called 'witches' that spread despair to the human world, and in return, each one of them will be granted any single wish they desire. However, as Homura's omen suggests, there might be far more to becoming a magical girl than Madoka and Sayaka realize... Notes: - Due to the 2011 Tōhoku earthquake and tsunami, the broadcasts of episodes 11 and 12 were delayed and were later aired as a double feature on April 21, 2011.</i>

Yozakura Quartet

When demons walk the streets, the cops need to recruit more demons! In a town where humans and demons co-exist, it takes more than a normal police force to maintain the peace. Enter the Hiizumi Life Counseling Office, a fantastic foursome of unique teenagers, each gifted with an amazing super power! Since it sometimes takes real demon-fire to fight demon fire, the first three quarters of the team aren't exactly human: Ao, a cat-eared telepath; Kotoha, a half-human conjuror; and Hime, descended from a dragon (and the town's acting mayor), all of whom also happen to be delightfully female. Rounding out the group is the token male and human, Akina, the office director and "Oyakume," capable of banishing spirits permanently (and from their point of view quite fatally) via a process called tuning. They may not look as impressive as some other superhero teams, and they certainly don't have the most dynamic name ever, but come hell hounds or high water, but they will defend their city! (Source: RightStuf)

The Melancholy of Haruhi Suzumiya

Kyon, your typical high school student, has long given up his belief in the supernatural. However, upon meeting Haruhi Suzumiya, he quickly finds out that it is the supernatural that she is interested in; aliens, time travelers and espers among other things. When Haruhi laments about the lack of intriguing clubs around school, Kyon inspires Haruhi to form her own club. As a result, the SOS Brigade is formed, a club which specializes in all that is the supernatural. Much to his chagrin, Kyon, along with the silent bookworm, Yuki Nagato, the shy and timid Mikuru Asahina, and the perpetually smiling Itsuki Koizumi, are recruited as members. The story follows the crazy adventures that these four endure under their whimsical leader, Haruhi. The story is based on the light novels by Nagaru Tanigawa. Note: This entry is for the original 14-episode 2006 airing. The series was further expanded and reordered into <a href="https://anilist.co/anime/4382/Suzumiya-Haruhi-no-Yuuutsu-2009/">a 28-episode series in 2009.</a>

Fate/Zero

With the promise of granting any wish, the omnipotent Holy Grail triggered three wars in the past, each too cruel and fierce to leave a victor. In spite of that, the wealthy Einzbern family is confident that the Fourth Holy Grail War will be different; namely, with a vessel of the Holy Grail now in their grasp. Solely for this reason, the much hated "Magus Killer" Kiritsugu Emiya is hired by the Einzberns, with marriage to their only daughter Irisviel as binding contract. Kiritsugu now stands at the center of a cutthroat game of survival, facing off against six other participants, each armed with an ancient familiar, and fueled by unique desires and ideals. Accompanied by his own familiar, Saber, the notorious mercenary soon finds his greatest opponent in Kirei Kotomine, a priest who seeks salvation from the emptiness within himself in pursuit of Kiritsugu. Based on the light novel written by Gen Urobuchi, Fate/Zero</i> depicts the events of the Fourth Holy Grail War—10 years prior to Fate/stay night</i>. Witness a battle royale in which no one is guaranteed to survive. (Source: MAL Rewrite) Note: The first episode aired with a runtime of ~48 minutes as opposed to the standard 24 minute long episode.</i>

Twin Star Exorcists

Rokuro Enmado is a young boy who used to be a powerful aspiring exorcist, before a tragic incident left his friend dead and made him abandon the profession. One day, he has a fateful encounter with Benio Adashino, a girl around his age and a well known exorcist from the east. According to prophecy, Rokuro and Benio are the "Twin Star Exorcists", and are destined to marry and have a child which will be the ultimate exorcist, capable of cleansing all evil spirits, or Kegare, from the world. When Rokuro's best friend Ryogo goes missing, Rokuro is forced to ask Benio for help to enter Magano, the realm of the evil Kegare, to rescue him! (Source: Wikipedia)

Blast of Tempest

One day, a sorceress princess was stuffed into a barrel and banished. One day, a single girl was suddenly murdered, and the culprit still runs free. And one day, a battle spanning time and space over magic and revenge began! Sanity and madness, sense and intelligence, self-confidence and convictions. The tragic tale of this irrational world starts now. The Kusaribe family is a family of sorcerers under the protection of the "Tree of Origins". Their princess, Hakaze Kusaribe, was the greatest sorceress of their family. But Samon Kusaribe, a member of their family seeking to resurrect the "Tree of World's End", a tree that opposes the "Tree of Origins" and controls the power of destruction, stuffs her into a barrel, and banishes her to a deserted island. From the deserted island, she sends a message out to sea, which is picked up by Mahiro Fuwa, a young boy who's sworn vengeance upon the criminal who killed his little sister, Aika. Mahiro agrees to help Hakaze under the condition that she find Aika's killer with her magic. But once Mahiro's best friend and Aika's lover, Yoshino Takigawa is rescued from danger, he too gets dragged into this tale of revenge. (Source: Aniplex USA)

11eyes

When the sky turns red, the moon turns black, and monsters roam the streets, Satsuki Kakeru finds himself involved in a dangerous situation and is transported into a different world. When he meets four others in the same predicament, they band together to survive and to navigate this mysterious new world. But things take a turn for the worse when six shadows appear with the intent of killing Kakeru and his friends. (Source: Sentai Filmworks)

My-HiME

Mai Tokiha thought she had enough trouble in life between taking care of her ailing brother and transferring to a new school. But when she saves a mysterious girl wielding a sword, everything changes. A power awakens within her and she becomes a HiME, a battle princess! But she’s not alone with this power—eleven other girls share her fate, and the burden is a heavy one. (Source: Crunchyroll)

Symphogear

With the coming of spring, Hibiki Tachibana and Miku Kohinata start their first year in high school school at the prestigious Lydian Music Academy. That their idol, the singer Tsubasa Kazanari, also attends Lydian is just an added bonus. Neither of them know that their lives are about to change forever. Neither of them know that the first, awakening beat is almost upon them. (Source: Rightstuf)