Fanfiction.net is also a good place. There are many fanfic writers who contribute to this site. However, the search function might be a bit more basic, but with some patience and using different combinations of the names 'Sesshomaru' and 'Rin' along with 'love', you should be able to find some good ones.
Some dedicated Inuyasha fanfiction communities on social media platforms like Reddit or Tumblr might also have posts or links to 'Sesshomaru and Rin love' fanfictions. You can join these communities and look for relevant threads or posts.
Another great one could be 'The Bond of Sesshomaru and Rin'. It might explore their relationship over time, starting from their initial meeting and how it develops into a deeper, more profound love, with adventures and challenges that test their bond.
One popular theme is growth. Fans like to write about how Rin grows from a young girl into a more confident and capable person with Sesshomaru's influence. Another theme is loyalty. Sesshomaru's loyalty to Rin and vice versa is often explored.
One common theme could be the exploration of Sesshomaru's character development. How he, who was once a cold and aloof demon, would adapt to the idea of becoming a father. Another theme might be the changes in Rin's relationship with Sesshomaru and the others around them. For example, how would the other characters in their world react to this new development.
Sesshomaru and Rin's relationship is a complex and beautiful one. Sesshomaru, a powerful demon, initially saves Rin from death. Over time, Rin follows Sesshomaru loyally. Their bond grows as Sesshomaru gradually shows more care for Rin. It's a love that is not expressed in a typical human way but through his actions of protecting her. For example, he often comes to her rescue when she is in danger, and she in turn has unwavering faith in him.
One common theme could be the exploration of their relationship's growth. It might start from Sesshomaru's initial coldness towards Rin and how it gradually thaws as they get closer. Another theme could be the acceptance within the demon world, as Sesshomaru is a powerful demon and Rin is human - or at least was human originally. And there could also be themes of family, as they build a life together and perhaps face issues related to having children or integrating into each other's 'familial' circles.
One common theme is growth. Rin grows up under Sesshomaru's watchful eye, and the story shows how she becomes a stronger person. Another theme is loyalty. Rin's loyalty to Sesshomaru and Sesshomaru's unspoken loyalty to protect Rin are often explored.
In the story of Rin and Sesshomaru, it starts with Rin being an orphan. Sesshomaru, initially seeing her as a nuisance, eventually grew to protect her. Their love story is about how two very different beings, a demon and a human girl, came to depend on each other. Sesshomaru's cold exterior melted as he became more attached to Rin. He would go to great lengths to keep her safe, which is a sign of his deep affection for her, even if he didn't always show it in an obvious way.
Sesshomaru's personality in these fanfics can be shown as a complex mix. He is still the powerful and fearsome demon, but his love for Rin makes him more vulnerable. He may hide his emotions most of the time, but there are moments when his concern for Rin slips through. As for Rin, she is portrayed as a ray of sunshine in Sesshomaru's rather dark world. She is curious, brave in her own way, and her love for Sesshomaru gives her the strength to face many difficulties. She might even be the one to make Sesshomaru see the good in the human world more often.
Well, it depends on the specific fanfiction. Some authors might choose to include a kiss between Sesshomaru and Rin as a way to show the development of their relationship. But not all fanfictions will have this. There are many fanfictions that focus more on their platonic bond or other aspects of their characters. For example, some might explore Sesshomaru's growth as a character through his interactions with Rin without getting into a romantic kiss.
The moment Sesshomaru gave Rin the chance to live with him was crucial. It was a sign that he was starting to care. Then, there were times when Rin showed her unwavering loyalty to Sesshomaru, which further strengthened their bond. For instance, when other demons threatened Sesshomaru, Rin didn't abandon him. These mutual acts of care and protection are key moments in their love story.