I'm not sure specifically as I haven't read this light novel in detail. It could potentially be about a relationship, a personal journey, or some sort of emotional exploration. Maybe it's about a character who has been told not to die for someone, but that's just speculation.
You might try looking for it in specialized light novel stores, either physical ones if they exist in your area, or online stores that deal with Japanese light novels.
Miura Koto was a shakuhachi musician, and he had high attainments in Koto-Ryu's shakuhachi. He was born on December 31st, 1952, and he learned Kotoko-Ryu Shakuhachi from Oase Shouyun. In his music career, he also learned how to play the shakuhachi from Okoyama Ranmu and Okoyama Katsuya, and taught himself how to make the shakuhachi. After Miura Koto returned to Akita, he opened a shakuhachi classroom and began a shakuhachi performance. He was regarded as one of the highest level representatives in theoretical research and practical aspects of shakuhachi production. His in-depth research and original views on the long pipe shakuhachi were highly praised. Miura Koto was also well-known in China, and his performances and teaching activities received much attention.
Rentaro and Kisara could be forced to participate in a dangerous tournament where they have to fight against other pairs. They train hard together, and during this time, their relationship deepens. They develop a unique fighting style that combines their skills and helps them win the tournament.
One possible fanfiction could be where Rentaro and Kisara go on a mission together outside the protected area. They face a new type of Gastrea that they've never encountered before. During the battle, Rentaro realizes his growing feelings for Kisara as he sees her fight bravely to protect him. In the end, they defeat the Gastrea and their bond grows stronger.
One great Rentaro and Enju fanfiction is 'A New Day'. It explores their relationship in a post - apocalyptic world. It shows how they grow together and face new challenges. It has really good character development for both of them.
Kimi is not based on a true story. It's likely the result of the imagination and creativity of the writers, who came up with a unique plot and characters to engage the audience.
A possible plot could be Rentaro and Kisara going on a mission together to rescue some Civilians from the Gastrea. During the mission, they face various challenges and have to rely on each other's skills. Their relationship deepens as they overcome these obstacles.
It could be about various things. Maybe it's a story-driven experience with unique characters, like a coming - of - age story or an adventure in a fictional world.
I'm not sure about its popularity. It could be popular among fans of visual novels, especially those who enjoy stories focused on relationships. However, if it hasn't been widely promoted or if it has a niche target audience, it might not be as well - known in the broader gaming community.