Fate/stay night (2006)

There was once a Holy Grail War waged by Mages and Heroic Spirits in a town of Fuyuki. However, one Mage took advantage of the chaos of World War II to steal a Holy Grail. Several decades have passed, and the Yggdmillennia family, who took upon the Holy Grail as its symbol, defected from the Mages' Association. Furious, the Association sent forces to deal with the Yggdmillennia, but were defeated. With the Holy Grail system changed, war at an unprecedented scale breaks out.

The Fourth Holy Grail War has begun, and seven mages must summon heroes from history to battle each other to the death. Only one mage-and-hero pair will remain to claim the Grail and have their wishes granted! Kiritsugu Emiya was once an assassin but now fights in this war to save the world from those who would destroy it with the Grail’s power.

Waking up in a strange virtual world with no recollection of the past, Hakuno finds himself forced to fight for survival in a war he does not understand for a prize beyond value; the opportunity to have one's wish granted. With only an enigmatic "Servant" by his side, Hakuno Kishinami will have to face both friends and foes in battles to the death in order to not only gain possession of a mysterious object known as the "Holy Grail," but also to find the answer to the most important question of all: "Who am I?"

Legends speak of the Shepherd, a savior who will bring peace to the seraphim and human worlds. Sorey has spent his life studying ancient books and exploring ruins to learn more about this legendary savior. When he and his seraphim companion Mikleo encounter a mysterious girl in the ruins, the stories of the Shepherd become Sorey's reality.

Lloyd is a white mage who was unexpectedly banished from the hero's party. As he was lost and uncertain, he happened to cross paths with an S-rank adventurer party in need of a white mage, so he joined them on their quest. Little did anyone know at the time that the hero's party would fall apart and Lloyd would rise to fame.

Illyasviel von Einzbern is an ordinary elementary school student who becomes a magical girl when the magical Kaleidostick Ruby deems her a more suitable master than the sorceress, Rin Tohsaka. Rin, who had been tasked by the wizard Zelretch to collect the seven Class Cards containing the spirits of Heroic Spirits from legend, finds that she is unable to change Ruby's mind and must supervise Illya in completing the task of collecting the Class Cards. During Illya's adventures, she receives a friend and rival in a girl named Miyu, the contracted master of the Kaleidostick Sapphire, which similarly abandoned its original master and Rin's rival, Luvia Edelfelt.

Betrayed by his childhood friend and cast out of the Hero Party, Orhun Dura—once their loyal Enchanter—is branded by his former comrades as “a jack-of-all-trades but a master of none.” Alone, he sets out to forge a new path as a solo adventurer. His journey sparks explosive battles, deadly rivals, and unexpected allies—and he’ll rise to shatter every expectation. The ultimate solo comeback begins!

In a Holy Grail War, Mages (Masters) and their Heroic Spirits (Servants) fight for the control of the Holy Grail—an omnipotent wish-granting device said to fulfill any desire. Years have passed since the end of the Fifth Holy Grail War in Japan. Now, signs portend the emergence of a new Holy Grail in the western American city of Snowfield. Sure enough, Masters and Servants begin to gather... A missing Servant class... Impossible Servant summonings... A nation shrouded in secrecy... And a city created as a battleground. In the face of such irregularities, the Holy Grail War is twisted and driven into the depth of madness. Let the curtain rise on a masquerade of humans and heroes, made to dance upon the stage of a false Holy Grail.

Yuru, a young hunter, lives in a small village deep in the mountains, hunting wild game and leading a humble life with Asa, his younger twin sister. Their peaceful lives are torn apart when a dragon’s roar echoes across the sky. What secrets lurk within their village? What fate awaits them?

Noa’s past life as a young adult villager was nothing to write home about. But now he’s reborn as the 13th prince of an empire! His stats screen reveal that he’ll grow stronger proportionately to the number of people serving under him. To gain ultimate power, he’ll do whatever it takes to make sure that those who serve him shall serve him for life!

Ragna teams up with the enigmatic Crimson to stand against the dragons menacing the world. Although Crimson's motivations are mysterious, his goal and Ragna's perfectly align, and together they'll vanquish the dragons once and for all.

In a city of the dead, long since ruined and far from human civilization, lives a single human child. His name is Will, and he's being raised by three undead: the hearty skeletal warrior, Blood; the graceful mummified priestess, Mary; and the crotchety spectral sorcerer, Gus. The three pour love into the boy, and teach him all they know. But one day, Will starts to wonder: "Who am I?" Will must unravel the mysteries of this faraway dead man's land, and unearth the secret pasts of the undead. He must learn the love and mercy of the good gods, and the bigotry and madness of the bad. And when he knows it all, the boy will take his first step on the path to becoming a Paladin.

Akira Oda and his high school classmates are summoned to another world! While the other students are granted cheat abilities through the summoning, Akira merely gains the abilities of a mediocre "assassin." However, his status soon surpasses "hero," the strongest profession. After Akira becomes suspicious of the King behind the summoning, he is falsely framed for a crime and forced to flee.

Magic Knights are modern magic-users who fight with weapons converted from their souls. Ikki Kurogane goes to a school for these Magic Knights, but he is the "Failed Knight" or "Worst One" who is failing because he has no magical skills. However, one day, he is challenged to a duel by Stella, a foreign princess and the "Number One" student. In this duel, "the loser must be obedient for life."

Witches were once respected for the wisdom and magic they gifted to humans. But with the rise of the Gear Expansion era, the new science community deemed them as enemies who hindered the progress of society. Thus began the slaughter of all witches, including one who had mentored a human boy named Adonis. After witnessing her death, Adonis vows to bring bloodshed and terror to the human race.

After a mysterious virus wipes out ninety percent of humanity, vampires emerge from the recesses of the earth to enslave mankind, treating them like livestock. After growing tired of donating blood in exchange for protection, 12-year-old Yuichiro Hyakuya and his best friend Mikaela Hyakuya plot an escape along with the other orphans. After being the only successful runaway, Yuichiro joins the Moon Demon Company, an extermination unit of the Japanese Imperial Demon Army dedicated to killing off vampires.

In the wake of unknown Catastrophes in the heart of Terra, a mineral of unimaginable power has been discovered. With it, society's technology has made huge leaps and bounds, but the substance causes a deadly incurable disease, leading to a worldwide enslavement of the infected. As a rebellion is now on the rise, a pharmaceutical company races for a cure to save humanity.

After a brutal war, magic swordsman Kyle defeats the Demon King but is left dying. A crimson crystal sends him four years into the past to his once-destroyed hometown where he finds his lost loved ones alive. Armed with future knowledge, Kyle vows to prevent the coming tragedy and rewrite fate.