Well, Battousai is commonly characterized as a highly skilled and dangerous figure in fanfiction. His cold and sometimes ruthless nature is a big part of his allure. Kaoru, in contrast, is the character that represents warmth and compassion. She is attracted to Battousai despite his flaws. In many fanfictions, their relationship is a journey. It starts with misunderstandings and gradually develops into a deep and meaningful connection as they face various obstacles together, like battles against common enemies or dealing with the secrets from Battousai's past.
The term 'Battousai' is often associated with the character Himura Kenshin from the anime and manga 'Rurouni Kenshin'. In the story, Kenshin was once known as Hitokiri Battousai, a feared assassin during the Bakumatsu period in Japan. He was a master swordsman who killed many in the name of the revolution. However, after the war ended, he vowed to never kill again and carried a reverse - bladed sword as a symbol of his new pacifist ways.
There's a fanfic called 'Battousai in a New World' where the character is thrown into a different setting. It's interesting as it shows how he adapts using his skills and unique personality. It delves deep into his character development in an unfamiliar environment.
Another theme is the exploration of Kenshin's dual nature. His kind - hearted self and his violent past as Battousai. Female - written fanfictions may focus on how a female character tries to understand and accept both sides of him, which can lead to some really interesting character development and plotlines.
There's also 'Kenshin and the Unseen Bond'. In this fanfiction, a female protagonist forms an unexpected bond with Kenshin. It delves into how their relationship develops over time, with her being both intrigued and inspired by his code of honor. The story has some really interesting character interactions.
The plot should be engaging. It might involve some sort of conflict or challenge that they have to overcome together. Maybe a threat to their relationship from outside forces, or an internal struggle within one of the characters. In addition, a good fanfic in this category would handle the'mature' aspects in a tasteful way. It's not just about adding adult - themed content, but using it to enhance the story, like exploring deeper emotional and physical connections between the two characters in a respectful and meaningful way.