Spoilers off.
- Assassin X is The Heart of his team and is liked and respected by Saber, Irisviel, Maiya, and even Kiritsugu. In canon, Kiritsugu despises Saber and her ideals and only speaks to her twice throughout the entire Grail War. Here, thanks to Assassin X, the two of them can communicate with each other and even work together to a certain extent. It's not a friendship, but it's still a massive improvement.
- Assassin X's ninja hounds. Irisviel absolutely adores them and they enjoy cuddling with her as well. While Saber is more of a cat person, she likes and appreciates them. Maiya grows to like them as well, and even Kiritsugu, while he primarily appreciates their outstanding tracking abilities, does give them the occasional head rub.
- Caster X is able to provide wisdom and comfort for many in the Grail War.
- During the banquet, Caster X assures Saber that even though her way of being a king was flawed, that does not mean it was wrong and that no king is truly perfect.
- He's able to help Kariya get past his hatred and jealousy of Tokiomi and get him to focus on saving Sakura. Kariya listens, and he and his team form an alliance with Tokiomi. Together, they are able to save Sakura from Zouken, with Caster X being able to remove the Crest Worms from the poor girl's body.
- Caster X is able to get through to Berserker, helping him accept that the Fall of Camelot and Artoria's death was not his fault alone. He does not deny that Berserker made mistakes, but urges him to try and find redemption rather than punishment, arguing that the former is far more difficult to achieve but also much better for everyone.
- Lancer X is a very kind and graceful older sister figure to Rin, comforting her in times of distress, gently teasing the young magus and serving as a wonderful role model whom Rin clearly comes to idolize nearly as much as her beloved father.
- She also helps encourage the buried humanity in Tokiomi, striving to maintain a rapport with her Master and discourage him from blindly following the more immoral practices of magi. For his part, Tokiomi comes to genuinely appreciate his friendship with Lancer X, though he has trouble admitting as much, and by the end he’s seriously rethinking his original plan to just kill her off like he intends to with Gilgamesh.
- Waver in this story gets not just Iskandar as a friendly mentor but Saber X, AKA Qrow Branwen and Berserker X, AKA Kenpachi Zaraki. The three form a strange but friendly trio who all bicker a little but get along fairly well and endeavor to impart a bit of wisdom upon their young Master. Though Waver would never admit as much until the end of the War, he in turn grows to value and appreciate the camaraderie that these three warriors offer him.
- While Kariya still dies, he manages to meet a more dignified end, having successfully saved Sakura & said goodbye to Aoi while leaving a story based on Caster X's memories of Middle-Earth for Sakura & Rin.
- Thanks to the fragment of Caster X in her soul, Sakura is both slowly looking towards the future & finding comfort with her family again, even hugging Rin when she is sad after receiving the Azoth Dagger.
- While Maiya fell in love with Assassin X only to lose him, she still has the Ninja Hounds to keep her company & has found family with both Shirou & Taiga.
