A popular one is 'The Meeting of Paths'. This fanfiction focuses on a situation where Inuyasha and Sesshomaru meet under different circumstances than in the original series. It has great characterizations, and the way the two interact and gradually change their views of each other is really well - written.
Another option is Wattpad. Although it's not as specialized in anime - related fanfictions as the other two, you can still find some interesting 'Inuyasha' and 'Sesshomaru' crossover stories there. Some of the stories on Wattpad have a more modern take on the characters, which can be quite refreshing.
One popular Inuyasha and Fem Sesshomaru fanfiction is 'The New Path'. It explores a world where Sesshomaru is reimagined as a female character and her interactions with Inuyasha take on a whole new dynamic. It has an interesting plot that involves them teaming up against a new common enemy while also dealing with their own complex relationship.
Characterization is key in a great Inuyasha Sesshomaru OC fanfiction. The writer needs to capture the essence of Sesshomaru and Inuyasha accurately. Sesshomaru should still be his aloof, powerful self, and Inuyasha his hot - headed but good - hearted character. The OC should interact with them in a believable way. Moreover, the writing style matters. A vivid and engaging writing style that can bring the feudal Japan setting of Inuyasha to life is a big plus. Good use of description, whether it's about the landscapes or the characters' emotions, can make the fanfiction stand out.
Another great one is 'Fate's Intertwining'. This fanfiction focuses on how their destinies are linked in ways they don't initially understand. It has a lot of emotional depth and some beautifully written scenes between Sesshomaru and Fem Inuyasha.
In some fanfictions, Sesshomaru being Inuyasha's father can lead to really interesting plot developments. For example, it can create complex family dynamics. There might be stories where Sesshomaru has to come to terms with his new - found fatherhood and how it changes his relationship with Inuyasha, who he may have previously seen as an enemy or a rival. It also allows for exploring Inuyasha's feelings towards having a father figure like Sesshomaru, who is such a powerful and complex character in the Inuyasha universe.
Sesshomaru would raise the baby with a combination of discipline and protection. He would protect the baby from any threats, using his powerful abilities. At the same time, he would discipline the baby when it made mistakes, teaching it the ways of the demon world. Inuyasha, on the other hand, would add a more carefree and emotional touch to the parenting, creating a balance in the baby's upbringing.
In fanfiction, the baby could be the key to unlocking some long - lost secrets in the Inuyasha universe. Since Sesshomaru and Inuyasha have such complex histories and lineages, the baby might hold the answers to ancient prophecies. It could also have a special bond with the Jewel of Four Souls, perhaps having a unique way of controlling or protecting it that neither of its parents had. And of course, there would be all kinds of emotional drama as the two brothers - turned - co - parents deal with their new relationship.
One great piece of Sesshomaru and Inuyasha fanfiction is 'The Unlikely Alliance'. It shows an interesting scenario where Sesshomaru and Inuyasha have to team up against a new common enemy. Their interactions are full of the typical sibling - like rivalry and grudging respect.
For female Inuyasha and Sesshomaru fanfiction, I'd suggest checking out AO3 first. It has a great tagging system that allows you to specifically search for what you want. Also, keep an eye on some dedicated Inuyasha fanfiction review websites. They often feature new and popular stories that involve these characters in different scenarios, which can be really interesting to read.
First, you need to understand the characters well. Sesshomaru is a complex character, so study his personality traits from the original series. For the OC, give her a distinct personality and backstory. For example, if she's a healer, explain how she got those skills.