Yusuke would likely become more withdrawn.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.
In Yu Yu Hakusho lemon fanfiction, the relationship between Yusuke and Keiko can be quite diverse. Sometimes it delves deeper into their emotional connection, showing a more passionate side of their bond that might not be as fully explored in the original series. It could involve scenarios where they face new challenges together and their relationship grows stronger through those experiences.
One common theme is the exploration of their hidden desires. Since the 'lemon' aspect often implies a more sensual side, it could be about Yusuke and Keiko exploring their physical attraction that they may have suppressed in the original story. Another theme could be the intensification of their emotional bond. Through various situations in the fanfiction, their love and understanding for each other can grow deeper.
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.
One possible plot could be that Keiko is caught in the crossfire of a demon battle that Yusuke is involved in. Yusuke, being a spirit detective, has many enemies. Maybe a powerful demon targets Keiko to get back at Yusuke. After her death, Yusuke could go into a deep state of despair and vow revenge. He might journey to the spirit world to find a way to bring her back, facing numerous challenges along the way.
One way the story could develop is that Yusuke goes into a deep state of grief and denial at first. He might start to isolate himself from his friends and the spirit world as well. He could be haunted by memories of Keiko and constantly wonder if there was something he could have done to prevent her death.
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.
To write this fanfic, you need to understand the characters well. Yusuke is tough on the outside but has a soft heart. Keiko is strong - willed and intelligent. Use these traits in the story. For instance, when they face difficulties during the pregnancy, Yusuke might want to solve them with his fists at first, but Keiko would remind him to think rationally. Also, add some cute moments, like Yusuke feeling the baby kick for the first time.
One idea could be that they struggle at first with the news of Keiko being pregnant. Yusuke, being his impulsive self, might initially panic but then quickly step up to support Keiko. He could start taking odd jobs to save money for the baby. Keiko, on the other hand, would be the calm and organized one, preparing for the baby's arrival by reading all the parenting books she can find.
One great 'yusuke x keiko fanfic' could be 'The Unspoken Bond' which delves deep into their relationship. It shows how Yusuke's rough edges are softened by Keiko's gentle nature.