What if Saitama has a biological sister?
  • Reads 3,549
  • Votes 160
  • Parts 13
  • Time 1h 35m
  • Reads 3,549
  • Votes 160
  • Parts 13
  • Time 1h 35m
Ongoing, First published Apr 16, 2024
1 new part
Non-canon Story of One Punch Man universe, a 21 year old woman named "Nancy" was a number 1 class S hero of the City-U. Retiring and trying to visit her Big Bro in the City-Z in his located apartment.

Nancy comes to visit Saitama once in a while when she found her big brother becoming bald and becoming insanely strong that he can one punch any foes.
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