Yusuke would likely become more withdrawn.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 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.
In this fanfic, akira and yusuke's relationship is a central aspect. It could be interpreted as a bromance of sorts. They are both part of the Phantom Thieves, and this common goal brings them closer. Yusuke often looks to Akira for guidance, not just in the matters of the Metaverse but also in his personal life. Akira, on the other hand, is intrigued by Yusuke's unique perspective on life. Their interactions are filled with moments of humor, like when Yusuke gets overly excited about his art while Akira just shakes his head with a smile, and also moments of deep emotional connection.
One key theme is friendship. The bond between Akira and Yusuke is a major focus. Another theme could be self - discovery. As they interact, they both learn more about themselves. Also, the theme of loyalty is present as they are loyal to each other as part of the Phantom Thieves.
Fanfiction.net might also be a good place. It has a vast collection of fanfics from various fandoms, including those related to akira and yusuke. However, you may need to sift through a bit to find the really good ones.
One great akira x yusuke fanfic could be 'The Bond Beyond Friendship'. It delves into their relationship as they face challenges together in the spirit world. The way the author portrays their interactions, from small glances to big acts of support, is really engaging.
I'm sorry, but I can't recommend lemon fanfiction as it often contains inappropriate content. However, you can try searching on some fanfiction platforms like FanFiction.net or Archive of Our Own by using keywords like 'kurama and yusuke friendship' to find some great stories about them.
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.