Several hundred years ago, humans were nearly exterminated by titans. Titans are typically several stories tall, seem to have no intelligence, devour human beings and, worst of all, seem to do it for the pleasure rather than as a food source. A small percentage of humanity survived by walling themselves in a city protected by extremely high walls, even taller than the biggest of titans. 
Flash forward to the present and the city has not seen a titan in over 100 years. Teenage boy Eren and his foster sister Mikasa witness something horrific as the city walls are destroyed by a colossal titan that appears out of thin air. As the smaller titans flood the city, the two kids watch in horror as their mother is eaten alive. Eren vows that he will murder every single titan and take revenge for all of mankind. 
(Source: MangaHelpers)

Light Yagami is a genius high school student who is about to learn about life through a book of death. When a bored shinigami, a God of Death, named Ryuk drops a black notepad called a Death Note, Light receives power over life and death with the stroke of a pen. Determined to use this dark gift for the best, Light sets out to rid the world of evil… namely, the people he believes to be evil. Should anyone hold such power? 
 
The consequences of Light’s actions will set the world ablaze. 
 
(Source: Viz Media)

The suspense horror/dark fantasy story is set in Tokyo, which is haunted by mysterious "ghouls" who are devouring humans. People are gripped by the fear of these ghouls whose identities are masked in mystery. An ordinary college student named Kaneki encounters Rize, a girl who is an avid reader like him, at the café he frequents. Little does he realize that his fate will change overnight.
 
(Source: Anime News Network)

Eren Jaeger swore to wipe out every last Titan, but in a battle for his life he wound up becoming the thing he hates most. With his new powers, he fights for humanity's freedom facing the monsters that threaten his home. After a bittersweet victory against the Female Titan, Eren finds no time to rest—a horde of Titans is approaching Wall Rose and the battle for humanity continues! 

(Source: Funimation)

Eren and his companions in the 104th are assigned to the newly-formed Levi Squad, whose assignment is to keep Eren and Historia safe given Eren's newly-discovered power and Historia's knowledge and pedigree. Levi and Erwin have good reason to be concerned, because the priest of the Church that Hanji had hidden away was found tortured to death, making it clear that the Military Police are involved with the cover-up. Things get more harrowing when the MPs make a move on Erwin and the Levi Squad narrowly avoids capture. Eren is also having problems with his Titan transformation, and a deadly killer has been hired to secure Eren and Historia, one Levi knows all too well from his youth. 
 
(Source: Anime News Network)

Emma, Norman and Ray are the brightest kids at the Grace Field House orphanage. And under the care of the woman they refer to as “Mom,” all the kids have enjoyed a comfortable life. Good food, clean clothes and the perfect environment to learn—what more could an orphan ask for? One day, though, Emma and Norman uncover the dark truth of the outside world they are forbidden from seeing.
 
(Source: Viz Media)

It’s been four years since the Scout Regiment reached the shoreline, and the world looks different now. Things are heating up as the fate of the Scout Regiment—and the people of Paradis—are determined at last. However, Eren is missing. Will he reappear before age-old tensions between Marleyans and Eldians result in the war of all wars? 
 
(Source: Crunchyroll)

Satoru Fujinuma is a 29 year old manga artist struggling to make a name for himself following his debut. But, that was not the only thing in his life that Satoru was feeling frustrated about… He has a unique supernatural ability of being forced to prevent deaths and catastrophes by being sent back in time before the incident occurred, repeating time until the accident is prevented. One day, he gets involved in an accident that has him framed as a murderer. Desperate to save the victim, he sends himself back in time only to find himself as a grade-schooler one month before fellow classmate Kayo Hinazuki went missing. Satoru now embarks on a new quest: to save Kayo and solve the mystery behind her disappearance.


The battle to retake Wall Maria begins now! With Eren’s new hardening ability, the Scouts are confident they can seal the wall and take back Shiganshina District. If they succeed, Eren can finally unlock the secrets of the basement—and the world. But danger lies in wait as Reiner, Bertholdt, and the Beast Titan have plans of their own. Could this be humanity’s final battle for survival? 
 
(Source: Funimation)

There's a rumor about a mysterious phenomenon called "puberty syndrome." For example, Sakuta Azusagawa is a high school student who suddenly sees a bunny girl appear in front of him. The girl is actually a girl named Mai Sakurajima, who is Sakuta's upperclassman who is also a famous actress who has gone on hiatus from the entertainment industry. For some reason, the people around Mai cannot see her bunny-girl figure. Sakuta sets out to solve this mystery, and as he spends time with Mai, he learns her secret feelings. Other heroines who have "puberty syndrome" start to appear in front of Sakuta. 
(Source: Anime News Network)

In the year 2015, the Angels, huge, tremendously powerful, alien war machines, appear in Tokyo for the second time. The only hope for Mankind's survival lies in the Evangelion, a humanoid fighting machine developed by NERV, a special United Nations agency. Capable of withstanding anything the Angels can dish out, the Evangelion's one drawback lies in the limited number of people able to pilot them. Only a handful of teenagers, all born fourteen years ago, nine months after the Angels first appeared, are able to interface with the Evangelion. One such teenager is Shinji Ikari, whose father heads the NERV team that developed and maintains the Evangelion. Thrust into a maelstrom of battle and events that he does not understand, Shinji is forced to plumb the depths of his own inner resources for the courage and strength to not only fight, but to survive, or risk losing everything. 
(Source: AniDB) 
 
 Note: Later releases include edited versions of Episodes 21-24 called the "Director's Cut" with some visual editing and adding extra scenes that appeared in the theatrical recap 'Death'.

When two people die at the same time, they’re sent to a place that’s neither heaven nor hell—a lavish bar between worlds where the stakes are high and the rules are simple: if you win you live again, if you die… you’re gone for good. 
 
Decim is the bartender charged with serving the souls who enter Quindecim. He may make a mean cocktail, but his true profession is to play the role of arbiter—a judge who determines whether or not a soul is worthy of reincarnation. To aid in his judgment, the bar’s patrons are forced to play simple games laced with sadistic twists designed to bring their true natures to light. To Decim, judgment has always been black and white—that is—until he meets a mysterious young woman whose fate seems impossible to decide. His indecision shakes the very foundation of the games and raises the biggest question of all: Who is fit to judge the dead? 
 
(Source: Funimation)

During daylight hours, an exclusive, elite private school prepares its illustrious students for careers in business, politics, and high society. But when darkness falls, the halls of this esteemed establishment transform into an underground gambling den where bright-eyed youngsters learn the timeless art of bluffing, backdoor dealings and social manipulation. In this school for the rich and elite, money is power, and the tyrant of the betting books rules with an iron fist. So when the beautiful Yumeko Jabami upsets the academy hierarchy with her voracious appetite for the thrill of the gamble, the entire student body mobilizes to send her house of cards tumbling down. 
 
(Source: Sentai Filmworks)

This psychological thriller, based on the manga written and illustrated by Sakae Esuno, is about Yuki, a loner who's not very good with people. He prefers to write a diary on his cell phone and talk to his imaginary friend, Deus Ex Machina &ndash; The God of Time and Space. However, Yuki soon learns that Deus is more than a figment of his imagination when he makes Yuki participate in a battle royale with eleven others. The contestants are given special diaries that can predict the future, each diary possessing unique features that give it both advantages and disadvantages. Within the next 90 days, the contestants must try to survive until there is only one left standing. The winner will become the new God of Time and Space. 
(Source: FUNimation)

Stalked by a beastly white tiger, Atsushi Nakajima has no idea that the menace lives inside him—a power that catches the attention of the Armed Detective Agency. Using inhuman abilities to combat crime, this team takes Atsushi under the wing of their most eccentric member, Dazai. Together, they tear through mafia-muddled mysteries while enemies keep an eye on the tiger’s lofty bounty.
 
(Source: Funimation)

The war for Paradis zeroes in on Shiganshina just as Jaegerists have seized control. After taking a huge blow from a surprise attack led by Eren, Marley swiftly acts to return the favor. With Zeke’s true plan revealed and a military forced under new rule, this battle might be fought on two fronts. Does Eren intend on fulfilling his half-brother’s wishes or does he have a plan of his own? 
 
(Source: Funimation)

The second season of Tokyo Ghoul. The ghouls of Anteiku invaded the Aogiri's site in order to rescue Ken Kaneki who is being tortured. Due to provocation, he unleashed greater power enough to defeat Yamori. To become stronger, he decided to join Aogiri and left Anteiku. Ghoul investigators also making their moves by collecting information about the eye-patched ghoul - Ken Kaneki. (Source: Anime News Network)

The "Abyss" is the last unexplored place in the world. Strange and wonderful creatures roam within, and it is full of precious relics that present humans can't recreate. Those that dare to explore the depths are known as "Cave Raiders." An orphan girl named Riko lives on the rim. Her dream is to become a Cave Raider like her mother and solve the mysteries of the cave system. One day, Riko starts exploring the caves and discovers a robot who resembles a human boy. 

(Source: Anime News Network, edited)
 
Note: The last episode aired with a runtime of ~48 minutes as opposed to the standard 24 minute long episode.

When Kouichi Sakakibara transfers to a new school, he senses a frightening atmosphere in his new class, a secret none of them will talk about. At the center is the beautiful Mei Misaki. Kouichi is immediately drawn to her mysterious aura, but he begins to realize that no one else in the class is aware of her presence. Soon after his arrival, what is known as the Calamity begins, and it claims the lives of many students. 
 
(Source: Sentai Filmworks)

Energy-conservative high school student Houtarou Oreki ends up with more than he bargained for when he signs up for the Classic Literature Club at his sister's behest—especially when he realizes how deep-rooted the club's history really is. Begrudgingly, Oreki is dragged into an investigation concerning the 45-year-old mystery that surrounds the club room. 
 
Accompanied by his fellow club members, the knowledgeable Satoshi Fukube, the stern but benign Mayaka Ibara, and the ever-curious Eru Chitanda, Oreki must combat deadlines and lack of information with resourcefulness and hidden talent, in order to not only find the truth buried beneath the dust of works created years before them, but of other side cases as well. 
 
Based on the award-winning Koten-bu light novel series, and directed by Yasuhiro Takemoto of Suzumiya Haruhi no Shoushitsu, Hyouka shows that normal life can be full of small mysteries, be it family history, a student film, or even the withered flowers that make up a ghost story. 
 
(Source: MAL Rewrite)

First season of the Monogatari Series, part 1/6. Contains the arcs Hitagi Crab, Mayoi Snail, Suruga Monkey, Nadeko Snake, and Tsubasa Cat from the Bakemonogatari light novels. 
Thanks to Meme Oshino, Koyomi Araragi, a high school student, is able to remain a human after coming across a female vampire... However, since the incident, Koyomi seems to meet girls who have an apparition-related issue. Hitagi Senjougahara doesn’t weigh anything, Suruga Kanbaru’s right arm becomes like that of a monkey’s, and a young girl, Mayoi, cannot find her way home no matter how many times she tries. Koyomi, a Mr. Nice Guy, ends up helping each and every girl solve her problem with the help of Meme Oshino.
 
(Source: Aniplex)

There is a tower that summons chosen people called "Regulars" with the promise of granting their deepest desires. Whether it be wealth, fame, authority, or something that surpasses them all—everything awaits those who reach the top. 
 
Twenty-Fifth Bam is a boy who had only known a dark cave, a dirty cloth, and an unreachable light his entire life. So when a girl named Rachel came to him through the light, his entire world changed. Becoming close friends with Rachel, he learned various things about the outside world from her. But when Rachel says she must leave him to climb the Tower, his world shatters around him. Vowing to follow after her no matter what it takes, he sets his sight on the tower, and a miracle occurs. 
 
Thus begins the journey of Bam, a young boy who was not chosen by the Tower but opened its gates by himself. They call his kind "Irregulars"—beings that have shaken the very foundation of the Tower each time they set foot inside it.

In Demon Slayer: Kimetsu no Yaiba Mugen Train Arc, Tanjiro Kamado and his fellow Demon Slayer members embark on a mission aboard the Infinity Train. Their new mission is to investigate a series of mysterious disappearances, carried out by a demon that has been terrorizing passengers and killing the demon slayers who oppose it.
 
Note: The first episode is entirely anime original. Episodes 2-7 are a re-edited version of the movie featuring new scenes and music.

The story takes place in a world where an unknown virus has killed the entire human population except for children under 13. Those children were then enslaved by vampires. The manga centers on Yuichiro Hyakuya, a human who dreams of becoming strong enough to kill all vampires. 
 
(Source: Anime News Network)