I'm not sure specifically as I haven't read it. It could be about the aftermath of a fire, perhaps exploring how characters deal with the destruction, loss, and the process of rebuilding both physically and emotionally.
Well, often novels with such a title might deal with how people pick up the pieces after a catastrophic event like a fire. It could explore the emotional and physical challenges the characters face, such as rebuilding their lives, dealing with loss, and finding hope again. Maybe it also shows how a community comes together or falls apart in the wake of the fire.
I'm not entirely sure specifically as I haven't read it in detail. But generally, it might be about the aftermath of a fire, perhaps exploring how the characters deal with the destruction, loss, and rebuilding of their lives.
According to my knowledge of online novels, the term Nanming Li Fire appears more frequently in novels, but I'm not sure if there's a phoenix fire with the same name as the True Sun Fire because I haven't checked the relevant literature. If there is more information, I can try my best to answer your questions.
You could start from the chapter where Season 2 of the anime ended. But it's best to check manga forums or dedicated websites for specific recommendations.
I'd suggest looking for manga reading guides related to Fire Force. They often specify precisely where to begin after season 2. You could also ask fellow fans on manga-related social media groups for accurate starting points.