Yes, there are quite a few. One great way to find them is to search on Tumblr. Many fans share their favorite sesshomaru x kagome fanfictions there. Some of these fanfictions may show sesshomaru protecting kagome in dangerous situations, which gradually makes kagome see a different side of him. This could be the starting point of a special relationship between them in the fanfiction world.
One common theme is the idea of 'opposites attract'. Sesshomaru is often portrayed as cold and aloof, while Kagome is warm and empathetic. Their different personalities coming together is a popular concept.
Common themes include the power dynamic between them. Sesshomaru is a powerful demon and Kagome has her own spiritual powers, so how they interact in terms of power is often explored. Friendship is also a theme that can develop into something more. As they face various challenges in the Inuyasha universe, they start to rely on each other, which can lead to deeper emotional connections. And sometimes, there's a theme of redemption for Sesshomaru, with Kagome being a part of that journey.
One common theme is the growth of their relationship. Starting from distrust or indifference, they gradually come to understand and care for each other. Another theme could be adventure. They might go on quests together, facing various demons and challenges, which brings them closer. Also, the theme of cultural clash might be present, as kagome is from a different time and has different values compared to sesshomaru.
I really like 'A Different Path'. In this fanfic, kagome and sesshomaru are forced to team up due to a common enemy. The story is full of interesting dialogues between them as they struggle with their new - found partnership. It also delves into their individual growth as characters as they deal with their feelings for each other.
The theme of 'growth and acceptance' is also prevalent. As they interact, both kagome and sesshomaru often have to grow as individuals to accept their feelings for each other. They need to overcome their prejudices and past experiences, which makes for a very engaging read.
The theme of sacrifice could be present. Sesshomaru might have to sacrifice his solitary lifestyle and some of his pride to be there for Kagome and the baby. Kagome may have to sacrifice her own plans and dreams for a while to focus on the pregnancy. Additionally, the theme of unity could be explored as they have to be united in facing the challenges that come with her pregnancy, such as potential threats from other characters who don't approve of their relationship.
One common theme is the forbidden love aspect. Since Kagome is often paired with Inuyasha in the original series, a relationship with Sesshomaru goes against the expected. Another theme is power dynamics, as Sesshomaru is a very powerful demon and Kagome has her own unique powers.
One common theme is possessiveness. Since Sesshomaru is yandere in these fanfics, his extreme possessiveness over Kagome is often a central element. He doesn't want to share her with anyone and will go to great lengths to keep her by his side.
The theme of redemption can be found in many 'sesshomaru x kagome mate fanfiction'. Sesshomaru may have a dark past or actions that he needs to atone for, and Kagome's love and influence help him on that path. Another theme is the exploration of new powers. Their union may unlock new abilities for either or both of them. And of course, the theme of acceptance, as they have to accept each other completely, flaws and all, in order to have a successful relationship.