Boob Wars: Big Breasts vs Flat Chests

At the beginning of the 22nd Century, an anomaly began occurring in the bodies of women…
All the women of the world became either E Cups and up or A cups and under.
"Big Breasts" and "Flat Chests"…
By their division into these two groups, the debate over which was superior began.
After the first incident of armed conflict, known as the "Nyuuhen Tragedy," the entire world was split between the Big Breasts Tribe and the Flat Chests Tribe and an intense conflict ensued.

87 years later…
The secret organization of Erorists, "Eagle", has ordered our protagonist Takamura Manabu to pursue the mission of his career: "Seduce Queen Milk Elioto of the Big Breasts Tribe and Queen Teresa Premadasa of the Flat Chests Tribe and bring this war to a close."
"Eagle" immediately sent the Erorist, Takamura Manabu, to the two queens!!
Can Manabu stop the two queens and bring this war to an end!?

A blazing hot Turn Based Card Battle Adventure brought to you by softhouse-seal!!
Whether the Boob War will come to an end or not rests in your hands!!

Source: MangaGamer.com product page description