One great 'Muichiro x Reader' fanfiction is 'A Meeting in the Mist'. It beautifully captures Muichiro's somewhat aloof nature while gradually developing a sweet relationship with the reader. The descriptive language used really makes you feel like you're in the Demon Slayer world with them.
[Rebirth: The Alluring Killer Concubine]. I recommend it to you. The plot is very attractive. You will definitely like it! I hope you like this fairy's recommendation. Muah ~😗
One common theme is the deep emotional bond between them. Given their relationship in the original work, fanfictions often explore how they support and care for each other on a more profound level. Another theme could be adventure, where they go on quests together and their relationship develops during those experiences.
The relationship development between Muichiro and the reader has to be believable. It can't be too rushed. A slow - burn, where they gradually get to know each other, understand each other's quirks, and form a deep connection over time is much more appealing. Also, the setting should be in line with the Demon Slayer universe. Whether it's in the Demon Slayer Corps headquarters or on a mission, the details of the world should be well - described.
Muichiro's death in the manga occurs during a particularly intense confrontation. His injuries accumulate, and he ultimately succumbs despite his valiant efforts.
The following are some novel recommendations about being reborn as a dancer:
1. "Sheng Chong Ballet Sweet Wife": The female lead was named Jing Xi, a Ballet dancer, and the male lead was her stepbrother.
2. Ice Dancer (Flower Skating): The female lead, Ji Tiantian, was a ballerina who later turned into an ice dancer. She was related to Tang Yi.
Both of these novels cover dance elements and might fit your needs for reborn dancers. He might need to search further for other related novel recommendations.