Well, Cid Kagenou does reveal himself at a crucial point in the manga. This reveal has significant implications for the plot and character development.
I don't have a definite answer for you. The manga might be keeping us in suspense about who Cid Kagenou will end up with. It could be a surprise twist or a character that has been hinted at throughout the series.
Well, it can be considered popular. It has a certain following. The world - building in 'ragna crimson light novel' is really appealing, which is one of the reasons for its popularity. Also, the character development is engaging, making readers want to keep reading to see how the characters grow and change throughout the story.
Time travel forces Ragna to face his past, which can make him more self - aware. He may see the mistakes he made in the past and strive to correct them, leading to personal growth.
They might love fanfiction because it allows them to explore different worlds and scenarios that the original works may not have covered. Fanfiction can provide a fresh perspective on their favorite characters.