Again, without knowing the details of this 'Marwan real story', it's hard to say. It could be significant to his family and friends if it's about his personal achievements or a life - changing event he experienced.
Ashraf Marwan was an Egyptian spy. He played a complex role in the political and intelligence landscapes. He provided valuable information to the Israelis at times, which had significant impacts on the power dynamics in the Middle East.
His defection or cooperation with the Israelis was a significant event. It changed the balance of information in the Middle East intelligence community. Also, his life and actions were constantly under the spotlight, and any move he made was carefully watched by different parties. His death was also a mysterious event, with different speculations surrounding it.
Since I don't know the exact 'Marwan real story', it could be about a Marwan who achieved something great in his field. Maybe he overcame many difficulties to reach his goals, like starting from a poor background and becoming a successful entrepreneur through hard work and determination.
Typically, generic manga lack originality. They might follow common tropes and formulas. The themes and settings can be repetitive too. But sometimes, they still manage to be enjoyable for light reading.