Shoko is a student at Ryuusei Private Academy Middle School. Her dear sister, Kyoko, had went to study abroad five years ago and hasn’t heard from her since. One day, an unknown entity suddenly attacks Shoko. The ones who attacked her had been the Dryads, underlings of the evil goddess, Eris, who was once sealed by Goddess Athena. When Shoko and Saori Kido awaiting the Galaxian Wars meet, the gears of destiny begin to turn!
Dark Eden is the "land of discord,"
controlled by the evil god, Eris.
العدن المظلم هو "أرض الخلاف" والتي
 تحكمها الآلهة الشرّيرة إيريس
Das Finstere Eden ist das Land der Zwietracht,
das von der bösen Göttin Eris beherrscht wird.
El Edén Oscuro es la tierra de las
disputas controlada por la diosa Eris.
Es la tierra de las disputas
controlada por la diosa Eris.
L’Éden obscur est le domaine d’Éris,
la déesse de la Discorde.
L'Eden Oscuro è la "terra della Discordia"
controllata da una divinità malvagia, Eris.
O Éden das Trevas é a "terra da discórdia",
controlada por Éris, a deusa maligna.
Чёрный Эдем — «земля раздора»,
где правит богиня зла, Эрис.