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.
Nope, Megumi is alive. The author has chosen to keep Megumi's character alive to continue developing their story and interactions within the manga's world.
Joseph Story was probably a figure with various aspects to his identity. Maybe he was a professional in a certain field, like a writer, a scholar, or a public figure. His life and letters would then be a way to explore his achievements, his setbacks, and his influence on those around him. From the title, we can assume that the book or work aims to document his life journey through his own written correspondence and other related information.