John230

Beyond the Horizon of Fate Ren Aoki never expected his life to change. Yet after being transported into the world of the Nasuverse shortly before the Fourth Holy Grail War, he awakens the mysterious Astra Horizon System—a system that grants him abilities, knowledge, and opportunities that should not exist within the original timeline. Armed with knowledge of the future, Ren initially believes he can simply prevent the tragedies he remembers from Fate/Zero. But changing fate is never that simple. One decision leads to another. One saved life creates another divergence. And before long, the future Ren once knew begins to collapse into something completely different. Ryuunosuke Uryuu is stopped before Caster can be summoned. Sakura Matou is rescued from Zouken. Tokiomi Tohsaka survives. A different Artoria enters the war as Lancer. Morgan becomes Ren's ally. And Irisviel von Einzbern is given a chance to escape the fate that was once destined for her. But Ren soon discovers that preventing the tragedies of the Fourth Holy Grail War is only the beginning. The Holy Grail itself is hiding a far greater danger. Instead of simply winning the war, Ren and those who have chosen to stand beside him must uncover the truth behind the Greater Grail, the corruption within it, and the existence that lies at the heart of the ritual. Now, with the timeline changing faster than Ren can predict, former enemies may become allies, allies may find themselves divided by different ideals, and the future he once knew may no longer provide the answers he depends upon. Ren entered this world believing he was here to change fate. He will soon discover that changing fate also means creating a future that has never existed before. And once the horizon of the original story disappears... There is no guarantee what lies beyond it. (Note: Hello! This fanfic is my own take on a prototype of a story I previously read. The early chapters may feel familiar to some readers because they were inspired by that fanfic. However, this is my own version, and as the story progresses, it will gradually become very different, with its own plot, character development, and direction.)