Japan enacts a polygamous marriage system in order to revitalize its sagging economy as well as the birth rate. But to qualify, you must earn income substantially greater than the average, have completed some notable achievements in sports, arts, or the sciences, or have done some great deed that earned you the recognition of the nation. Our hero Asao Shouhei isn't rich, or remarkable in sports, arts, or the sciences, but on one fateful day, he rose to become a hero of the nation. And this is his story… and the story of the three women who love him and become his wives.
Amended Civil Code - Japan Becomes a Polygamous Marriage System is a completed manga by Akahori Satoru, first published in 2015. It blends romance, comedy and slice of life. You can read all 42 available chapters of Amended Civil Code - Japan Becomes a Polygamous Marriage System online for free on MangaPulse; the newest is Chapter 42, added 2023-02-12. The series is finished, so you can read it from start to end in one go.