He looked upon the warm sun, and so was reminded of a promise.

For each Master, a Servant. For each Servant, a Master. The relic system was never introduced, and every Master in the Grail Wars has always received a Servant based on their own personality alone. Now, the Magus Killer goes to war - and receives his greatest weapon yet. But even with all of Assassin's skill and treachery, can they stand against the raw power of the Fourth War?

A young Emiya Shirou finds the limp body of Caster on the temple doorsteps one fateful night and the future is forever changed. The Witch of Betrayal always had a soft spot for cute things. Shirou/Multi. Warning: Very explicit

After Kiritsugu's death, the Mystic Eyes of Game Perception awoke within Shirou. With it he'll take the world, and several older ladies, by storm

Kukulkan was many things, but to Ritsuka she was just someone he was beyond happy to have back by his side. He made her feel certain things, things she didn't entirely know how to describe. Luckily, Ritsuka could put her feelings into words, not to mention he felt the same way about her. Always by each other's side and spurring one another forward, that was their promise.

"In a world of amazing People, you being the most Normal makes you the most Amazing" A Savior and a Sovereign, through their roles, are different, they are the same people, carrying the burden of their individual worlds, with the preparation of a threat in the future, a wanderer found himself in a world he doesn't know of.

Rome, the greatest empire humanity has ever known capable of conquering and annexing peoples with different cultures and beliefs under its banner. The Ides of March were the break. The dawn of Augustus' Empire rose over Rome, bringing the wind of change. However, something is hiding in the shadows, threatening the stability of the Princedom.

What would you do If you were suddenly transported to the Nasuverse just before the Fourth Holy Grail War as a young Shirou with no access to a Magic Crest, Magecraft, or OP Servant? [Self-Insert Shirou]

Rin x Sakura Yuri One-Shot: After being tormented, used and abused for so long, Sakura has finally snapped. The rain pour onto she and Rin. There's someone that should not be there. The final test for Rin to save Sakura. Read, Enjoy, Review!

This is an Isekai story into the Nasuverse as an Elemental rising to be the Apex entity of Earth. the chapters are short, but the updates are frequent and there are long chapters. Please give it a try.

Un encuentro inesperado, dos mundos que no deberían colisionar en esta época lo hicieron, esta vez no fue un asesino, ni un sacerdote, ni siquiera un anciano enfermizo, fue un rey el que encontró a este niño, y será este rey quien lo lleve a su destino.

The Fourth Holy Grail War goes much differently, and yet ends in the same disaster. It's surviors crippled, scarred or dead with Shirou Emiya being forged in the fire of just the mere shadow of all the worlds evils. And yet something is not quite right. Flowers bloom in the mud, and as Shirou grows, he'll find that the sins of the past run much further back then he can imagine.

A guy becomes Shirou, but wait- why is Illya younger? And why is Irisviel here? And why does he have the First Magic? And why is Illya so cute? ! (Self Insert Shirou in Kaleid x Prisma Trio)

Akito Tohsaka takes what is quite possibly the biggest gamble of his entire life; asking a certain blond Englishman if he would like to become his boyfriend. (a genderbent heroines au) (sequel to 'Ever Present Feelings')

Ritsuka Fujimaru was just a normal person some months ago and now he's fighting to save humanity by traveling through history. Not only that but he also encounters two kids who want to know the why they can't remember their past, family and home, joining him and Chaldea in order to het answers and their memories back. An alternative version of FGO Observer on Timeless Temple.

Héroes de cualquier tiempo y lugar, todos reunidos en un solo lugar ... El Trono de los Héroes!

Shirou Emiya, born to a Clan following the name they had not officially been called in centuries, chasing after a dream created by their ancestor as relentlessly as any other Magi family reaches for the Root. This is the boy that Kiritsugu Emiya and Irisviel von Einzbern find in the rubble and mud of the Fuyuki Fire, and this is the boy that they adopted.

Things had changed in his life way too quickly. For the better? for worst? whatever the answer was, he didn't knew. Not right now. Right after marrying the Queen of the sixth Lostbelt, Ritsuka has been taken by the Tam Lin and the queen herself to the Enma-tei to celebrate their union. Yet even he knows... wherever they go, as long as they're all together... he'll be in trouble.

Fgo Light-hearted Mecha robot story. (disclaimer, may contain lore alteration, grammatical error, and misspelling.)

Kiara was bored out of her mind with no patients to attend until an interesting little boy with red hair came into her office on that particular day.

Illyasviel's death triggered an event that reincarnated her love ones after death to a different world. A world of an otome game called "Royal Road". Capture targets, heroines, villainesses, it's all here! Watch our main characters as they weave through the royal labyrinth that is called politics and- paperwork... Y'know what, maybe being royalty isn't as exciting as it sounds.(AU)

Another time, in another place, a Holy Grail War is waged between seven masters. Louise Saint-Hermine, fated to be one of these masters, will quickly learn what one must sacrifice in order to win such a harsh contest. But the truth of the Grail War may be even more grim than she could ever imagine. An AU story where all of the Servants are drawn from the stories of Alexandre Dumas.

UA. In 2004 the Grail implodes and it is not only the ambitions of the participants that shatter but all the rules that governed magic and the Heroic Spirits. Freed from their glittering prison, they walk among us, their world intertwined with ours and yet distinct. Mages have a new role: to preserve the fragile balance between these two worlds. [Prologue / 22 chapters]

UA. En 2004 le Graal implose et ce n'est pas seulement les ambitions des participants qui volent en éclats mais toutes les règles qui régissaient la magie et les Esprits Héroïques. Libérés de leur prison étincelante ils marchent parmi nous, leur monde imbriqué au nôtre et pourtant distinct. Les mages ont un nouveau rôle : préserver le fragile équilibre entre ces deux mondes.

Alaya is gone. The Counter Force is gone. Without them, the Throne of Heroes released all the Heroes on Earth against the planet's will. When Gaia sensed that the World is on the brink of collapse, she sent its First Hero to fix the mess. Now, Shirou Emiya has to save the day once again. What can a Retired God, a Treacherous Knight and a Boastful King do to save the planet? [AU]