Suddenly, the Marriage Partner Showed Up by Hiromoto Hiroki — Ongoing

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Imagine a country where couples are chosen based on the compatibility of their genes. Whenever a resident reaches the age of 14, a partner will be suggested to him or her based on which match would result in the best child being born.

This is a collection of stories about some of the more "interesting" pairings chosen by this system.

Volume 1
Chapter 1: Yuuichi x Manami released Dec 31 '11 Incest
Chapter 2: Jun x Mai 1 released Dec 31 '11
Chapter 3: Jun x Mai 2 released Feb 8 '12
Chapter 4: Jun x Mai 3 released Feb 13 '12
Chapter 5: Jun x Mai 4 released Feb 26 '12
Vol 1 Omake released Feb 27 '12 Incest
Volume 2
Chapter 6: Jun x Mai 5 released Mar 1 '12