This is a collected volume of the manga series "Aquarian Age: The Road to Card Master" and "Aquarian Age Gaiden: Girls a War War!" which were serialized in Megami Magazine , published by Gakken . The main characters from each faction appear, but their personalities are so drastically exaggerated that they are almost like completely different people. For example, Mayumi has old-man hobbies and Reina is a fervent curry lover (because the Polar Star Empire was called the "Curry Empire" because of its card colors).