One possible aspect could be stories related to the darker or more complex characters she has portrayed. These characters might have influenced her in different ways, both personally and professionally. For example, if she played a character with a lot of internal conflict, it could have made her reflect on similar emotions in real life. Also, it could be about the struggles she faced in getting into the mindset of such complex characters, like doing extensive research or having long discussions with the scriptwriters.
One unique aspect could be her journey in exploring different genres that have a 'dark side' to them. For instance, if she worked in horror or psychological thriller projects, the experiences during those shoots could be part of it.
As of the latest chapters I've read, Megumi is still alive in the manga. Usually, such major character deaths are significant plot points and would be well-publicized if they occurred.
Typically, megumi fanfic often focuses on his personality traits. His stoicism and determination are often highlighted. For example, in many fanfics, his unwavering resolve in the face of danger is a central theme.
Well, Megumi's story in the manga was full of twists and turns. She had to overcome various obstacles, and there were also some unexpected developments in her relationships with other characters.