Well, in a fanfiction scenario, it could happen through a series of magical events. Maybe there's a spell that binds their fates together in modern Camelot. For example, a powerful mage who wants to see a new era of peace and unity might cast a spell that unites Saber and Archer in marriage. Their different personalities and abilities could complement each other well in this new setting. Saber's leadership and sense of justice combined with Archer's skills could make them a formidable couple in modern Camelot.
Perhaps it's a twist of fate. In the world of fanfiction, there could be a prophetic vision that dictates Saber and Archer must marry to save modern Camelot. They might initially be reluctant, but as they start to work towards the common goal of protecting Camelot, they find themselves falling in love. Saber's noble nature and Archer's mysterious allure could draw them closer, and the idea of marriage becomes not just a means to an end but a relationship based on love and mutual respect.
After marriage, they would be a very protective couple. Saber would protect Archer from any threats that come his way due to his more vulnerable human side in some interpretations. Archer, in turn, would use his abilities to safeguard Saber when she's in the midst of battle or political intrigue. Their relationship would be a blend of love, loyalty, and a shared commitment to the well - being of modern Camelot.
Well, they could end up in a parallel universe. In this universe, the rules of magic are different. Shirou, Saber, and Archer have to figure out how to use their powers effectively. Saber might struggle at first because her usual combat style doesn't work as well. Archer could use his knowledge of different situations to help them adapt. And Shirou, being the main character, might have some sort of special connection to this new world that helps them survive.
In Archer and Saber fanfiction, Archer's time travel can be a really interesting concept. It might allow him to change certain events in the story. Maybe he could use his time - traveling ability to prevent some tragedies from happening to Saber. For example, he could go back in time to before a battle where Saber was almost defeated and help her strategize better.
His time travel can also introduce new characters or storylines. Maybe he travels to a time when a powerful mage existed who could help Saber in her journey. By bringing this character into the present (or past, depending on how the time travel works), it would add a new element to the plot and create new relationships and conflicts. Another way it affects the plot is by changing Archer's own character development. Through seeing different versions of Saber in different times, he might grow and change in ways that wouldn't have happened without the time travel.
One great Archer Saber travel fanfiction is 'Saber and Archer's European Adventure'. It has them traveling through various European cities, with their unique personalities creating interesting situations at every stop. The descriptions of the places are vivid, and the interactions between them are true to their characters.
The archer could save Saber in the fanfiction by traveling through time to when Saber first made some fateful decisions. By guiding Saber to make different choices, the whole course of her story could be changed for the better. He could use his knowledge of future events to help Saber avoid dangerous situations and build stronger alliances. This would not only save Saber but also create a more positive and powerful narrative for her in the fanfiction.
For Shirou, his character can be developed by showing his growth in combat skills specific to the Camelot era. He could learn new sword - fighting techniques from Saber Lily. His ideals can also evolve as he experiences the different values in Camelot, becoming more confident in his own beliefs.
It could start with distrust. Saber Alter is different from the original Saber, and Shirou might be cautious. But as they face challenges together in Camelot, like battles against dark creatures, they start to rely on each other. This gradually builds respect and then a deeper connection.
In Arthuria fanfiction, Archer's time travel may result in him being mistaken for a prophesied figure. The Arthurian world is full of prophecies, and his sudden appearance and strange abilities could make the people of that world believe he is someone sent by the gods or fate. This could lead to him being thrust into a role he didn't expect, such as leading a quest or being a key figure in a battle, all while trying to figure out how to get back to his own time.
Perhaps they face challenges from the magical world. Since Saber has a connection to the throne of heroes, there could be threats from other entities who don't want a married Saber. They would have to fight together to protect their relationship and their new life. Meanwhile, they are also growing closer and deeper in love as they face these difficulties side by side.