In the original version of the
Fate/stay night visual novel, which was written by Japanese author
Kinoko Nasu while in college. One of the opponents of the main protagonist Ayaka Sajyo was a ″princess type girl″, who was the master of Lancer. According to Nasu, this girl had a special ″laughing archetype″, which was similar to
Luviagelita Edelfelt, a character from the sequel
Fate/hollow ataraxia. However, after Sajyo's gender was changed and she was renamed as
Shirou Emiya, Nasu and leading Type-Moon artist
Takashi Takeuchi decided to completely rewrite the character of Lancer's master. Nasu had decided to make Rin a positive character. On the advice of Takeuchi, he decided to change her temperament to be similar to that of Aoko Aozaki, a character from his earlier novel, Mahoutsukai no Yoru. According to the screenwriter, his heroines were based on Aoko Aozaki (including Rin, Azaka Kokuto from
Kara no Kyoukai, and Akiha Tohno from
Tsukihime), it was Rin who was the closest to the original character of Aoko. Initially, Nasu believed that this new heroine was too similar to Aozaki. Still, Takeuchi convinced him not to depart from the concept and explained the similarity between Rin and Aoko as a mental relation. Rin had a troubling background, facing financial problems due to the death of her parents in the background of the game. To further define Rin's character, the screenwriter decided to give multiple sides to her personality, designing her as a beautiful woman who would be primarily cute and courageous while at other times swearing and acting aggressively. According to Takeuchi, such a move with the divergence of Rin's appearance and behavior was made to make her more attractive and adorable for fans. After the release of
Fate/stay night, Nasu felt that Rin had received the most complete character compared to the other heroes of the game and was his "favorite" heroine in the visual novel. However, according to the writer, while writing scenes with Rin, he was under severe pressure from Takeuchi and other Type-Moon participants who placed greater emphasis on Saber and
Rider. In the end, Nasu decided to make Rin a contrast to Saber, perceived as an "ideal" girl in her eyes. Takeuchi was also pleased with Rin's final character, as well as the appearance of the prerequisites for this heroine's romantic relationship not only with Shirou, but also with Archer and Lancer, and called Rin a ″face of
Fate, but in a different sense than Saber”. In the making of the
Unlimited Blade Works anime, the Japanese animation studio
Ufotable and Nasu agreed to keep Rin's original looks from the visual novel believing it was still considered "appealing". Since Nasu found the original Rin to be "too unsociable", he felt that the Rin from the anime should be "more" social. In order to further develop the new characterization of Shirou Emiya, Ufotable paid attention to the way Rin and Shirou interacted, leading to Shirou being more amicable towards others than in the visual novel.
Casting Japanese voice actress
Kana Ueda noted that when she first started
voicing Rin, she developed a sense of "incompatibility" with her character. As a result, while the director expressed a similar opinion, Ueda's experience had further helped her to connect with Rin. She further described her character as "kind of like the
onee-san (elder sister) character, where she is responsible for guiding Shiro through his adventure". English actress
Mela Lee had regarded Rin, alongside
Rozen Maidens Shinku and
Blade of the Immortals Rin Asano, as one of the works where her career improved.
Design While designing Rin's visual appearance, Takashi Takeuchi had worked with the goal of making her ″possess a sense of perfection and a surrounding atmosphere of inaccessibility″. == Characterization and themes ==