Kiritsugu saved a young boy in the fire of Fuyuki after the 4th Grail war. Shirou's future is set by this act, from the action to a smile. He would be a hero, even if it doomed him. But what would happen if Kiritsugu bonded to an alien Symbiote right as he adopts him? What happens when the magus killer passes on more than his dream to his son?

"Ryuuto, just remember this - the more beautiful a woman is, the better she is at lying." "Don't worry, Mom. That's exactly my type." "?" After finding himself in the Type-Moon universe, Ryuuto became a Beast and thought that by living carelessly and enjoying wine and women, he could avoid his fate as an Evil of Humanity. But things eventually spiraled far beyond his expectation

I warn you, entering human history may not be fun if there is magic involved, this story is proof of that. That is why a false must be a true hero and not one of many, but the greatest of all. Here begins Halmeus story. Story started by fanfiction x-kalibuur, continued by ValenTino85K now also on wattpad as valen-tino85k

La línea de tiempo ha divergido con el paso del tiempo, la humanidad ha perdido paulatinamente la esperanza, aquel Ritual se llevó a cabo antes de lo previsto, los Primigenios han comenzado su periplo hacia la Tierra para destruir a la humanidad, finalmente, la Estrella de la Cosecha está cada vez más cerca de retornar. Y así, un mundo ha sido roto después de múltiples desastres...

It had been four years since Shirou won the Holy Grail War alongside Morgan. Four years since they said their final farewells, with no hope of ever meeting again. But some higher power had other plans. Morgan le Fay was the Queen of Fairy Britain, the ruler of a Lostworld. A world that sometimes had things drift in as Flotsam from PHH. One of those things was a person: Shirou Emiya

3 years after their fight against the Four Kings, Rin and Shirou have moved to London to study under the Clock Tower. When the sudden murder of a friend draws Shirou back into the past, he and his loved ones get embroiled into a grand conspiracy that harkens back to ancient times, all the while the mysterious Scar seeks to destroy Shirou's life at every turn.

En una tendencia donde reencarnas en cualquier cosa, no debería sorprender hacerlo en un personaje que ni siquiera existe. Self-insert en uno de los candidatos.(No se toma enserio)

While trying to escape Lancer, Shirō somehow ended up as a blonde girl. Now, she has to adjust to this new life while fending off overpowered people who either want her as a servant or her head on a platter. As if! She’s a free citizen of Japan, and if anyone’s going to serve someone, it’s going to be herself. After all, self service is the best policy.

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]

Continued from the short story "The Invitation." Naru is a boy who lives in the crime-filled city of Sekoyoma. He was already having a bad time, but now there is a Holy Grail War taking place! How will our protagonist deal with murderers, gangsters, and now servants? (Also acts as a pseudo-sequel to the Fate route)

Simple actions and choices from the past have the power to alter the future drastically. Shirou found himself discovering a small trinket of no value to many. But to his ignorance, this item changed the course of his fate beyond anything he thought possible. A twisted fate which coiled itself into another reality, one where Shirou would embark to find his answer.

In which a minor oversight in the assembly of the Greater Grail leaves the Fourth Grail War unable to proceed as planned. A single delay is all it takes to change everything for the one who endures. In a war meant for heroes and legends, calamities roam the Earth once again. Cross-posted across other platforms.

Les advierto, introducirse en la historia humana puede no ser divertido si hay magia de por medio, este relato es una prueba de ello. Por ello un falso debe ser un verdadero heroe y no uno de muchos sino el mas grande de todos. Aqui inicia, el relato de Halmeus. Historia iniciada por x-kalibuur de fanfiction, continuada por ValenTinOh85K ahora The-Lone Dreamer en wattpad

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 reason they can't remember anything of their lifes, who they are and how did they end up far from home . An alternative version of FGO Observer on Timeless Temple.

El grial corrupto fue destruido por el asesino de magos en la cuarta guerra, pero el ser que habita dentro de él volverá y buscará venganza por todo lo que ha sufrido. Es un universo alterno en el que Kiritsugu e Iris no mueren y Shiro es hijo biológico de estos.

After suffering a devastating loss before their planned departure, Shirou and Rin travel to London's Clock Tower to study magecraft, carrying unresolved grief and guilt. In this new world of dangerous politics and secret agendas, they find themselves under the Association's scrutiny, confronting shadows from the Fifth Holy Grail War while uncovering truths about the past (Post-UBW)

A story where Shirou summons a different Saber

"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.

In the wide spectrum of Parallel Worlds, Some worlds lean closer to the original while others go off the walls. This world is the latter. 17 year old Shirou Emiya gets thrust into the 5th Holy Grail War with his trusty servant by his side. Will he be able to prevent the events from 10 years ago from happening again? Will Archer's sanity stay intact? You have to read for anwsers.

Lucid dreams and isekai, you know the drill.

Sorcery is the forbidden magic, so powerful it can be called a divine miracle. When Shirou and Rin dabble with this forbidden art, they get far more than they bargained for. What are the chances of them surviving the Holy Grail War twice?

Accidentally killing yourself is a bummer, dying due to not reading the terms of service is embarrassing, and selling your afterlife is depressing. Now, let's follow Alistair, who, in his great wisdom performed the former while drunk, on his great quest of cleaning the Holy Grail of its corruption. And if that wasn't hard enough, he needs to clean it during the 4th Holy Grail war.

A Slice-of-Life in Chaldea