In fanfiction, Kurama is often depicted as calm, intelligent and elegant. His plant - based powers are usually a central part of the stories, whether he's using them for combat or for more peaceful purposes like healing. Yusuke, on the other hand, is usually portrayed as hot - headed but with a good heart. His impulsive nature gets him into trouble but also makes him a very dynamic character. He's also known for his strong fighting spirit.
Yusuke would likely become more withdrawn. He was always a bit of a rough - around - the - edges character, but Keiko's death would make him more somber. He might lose his sense of humor that he sometimes showed around her.
Yusuke might cope by throwing himself into his work as a spirit detective. He could try to distract himself from the pain of losing Keiko by taking on more and more dangerous cases. This would be his way of running away from his emotions at first.
Growth is another theme. Yusuke often goes through a lot of changes, and Keiko is there. Fanfictions might show how they both grow as individuals and as a couple in relation to those changes. For example, Yusuke becoming more responsible and Keiko being more understanding.
I'm not entirely sure which specific 'yusuke x botan lemon fanfic' you are referring to. But generally, in such a fanfic, the relationship between Yusuke and Botan would be explored in a creative way. It might involve their character traits and how they interact with each other in the fictional setting.
I'm not sure specifically who 'Yusuke Kishi' is in 'The New World' novel as there could be many characters with different roles. Maybe he is a minor character that is not widely known among general readers.
Another common theme is loyalty. They are both loyal to each other in the original, and fanfics build on that, showing how their loyalty can be a foundation for a closer relationship. For example, in many fanfics, they stand by each other in difficult situations that test their bond.
Another theme is sacrifice. Yusuke has sacrificed a lot in his life, and Keiko is often by his side. Fanfics may show how they both make sacrifices for each other and for their relationship. For example, Yusuke might sacrifice his time or safety to protect Keiko, and she might sacrifice her own desires for Yusuke's well - being.
A prevalent theme is the character's growth and development. In the original, Yusuke has a certain arc of growth, and in fanfiction with a female Yusuke, this can be both similar and different. It might involve her coming to terms with her new identity as a female spirit detective, facing discrimination or different forms of support in the spirit world. Also, the theme of friendship is often explored. How her friendships with characters like Hiei and Kurama might change or stay the same due to her being female. There could be more emotional depth in these relationships, like female - to - male friendships which are often portrayed with more nuance in fanfiction.