The TokyoPop translations are apparently ordered according to the narrative in the anime, which integrates material from the Gyousou/Taiki and Shouryuu/Enki arcs into the Youko/Keiki arc.

The Youko/Keiki and Gyousou/Taiki arcs intersect in the third book of both series. Unfortunately, I don't know anything about a hoped-for sequel to The Shore in Twilight that will conclude the Taiki arc either.

Additional links to fan translations can be found at C. Tokolsky's Ranka site and Shashinboku, which also provides summaries and a listing of all the stories in chronological order. Also see this Wikipedia entry.

Youko/Keiki
1. Tsuki no Kage, Kage no Umi. My translation: Shadow of the Moon, a Sea of Shadows. TokyoPop translation: The Twelve Kingdoms: Sea of Shadow.

Keiki chooses Youko as Empress of Kei. (Or as Shashinboku puts it, "Me and my annoying monkey conscience.")

2. Kaze no Banri, Reimei no Sora. My translation: A Thousand Leagues of Wind, the Sky at Dawn.

Youko, Suzu and Shoukei fight a corrupt government in Wa Province.

3. Tasogare no Kishi, Akatsuki no Sora. My translation: The Shore in Twilight, the Sky at Daybreak.

Risai escapes from Tai to Kei to ask Youko for help rescuing Taiki. Taiki and Youko are contemporaries.

Gyousou/Taiki
1. Masho no Ko ("The Demon Child").

Fuyumi Ono wrote "The Demon Child" before she started the Twelve Kingdoms series. She covers some of this material in "The Shore in Twilight, The Sky at Daybreak."

2. Kaze no Umi, Meikyu no Kishi ("Sea of the Wind, Shore of the Labyrinth"). TokyoPop translation: The Twelve Kingdoms: Sea of Wind.

Taiki chooses Gyousou as King of Tai.

3. Tasogare no Kishi, Akatsuki no Sora. My translation: The Shore in Twilight, the Sky at Daybreak.

Risai escapes from Tai to Kei to ask Youko for help rescuing Taiki. Taiki and Youko are contemporaries.

Shouryuu/Enki
1. Higashi no Watatsumi, Nishi no Sokai ("Sea God in the East, Vast Sea in the West"). TokyoPop translation: The Twelve Kingdoms: The Vast Spread of the Seas.

Enki chooses Shouryuu as King of En. This occurs during Japan's "Warring States" era, several centuries before they meet Youko.

Shushou/Kyouki
1. Tonan no Tsubasa ("The Wings of Dreams").

Kyouki chooses Shushou as Empress of Kyou. (Shoukei encounters Shushou in A Thousand Leagues of Wind.)

Kasho no Yume
Five short stories about the Twelve Kingdoms. My translation: Dreaming of Paradise.

1. "Winter Splendor": takes place in Tai and Ren during The Shore in Twilight, the Sky at Daybreak.
2. "Jougetsu": takes place in Hou after A Thousand Leagues of Wind, the Sky at Dawn.
3. "Pen-Pals": takes place in Kei and En after Shadow of the Moon, a Sea of Shadows.
4. "Dreaming of Paradise": takes place in Sai sometime before A Thousand Leagues of Wind, the Sky at Dawn.
5. "Kizan": takes place in Ryuu and Sou after A Thousand Leagues of Wind, the Sky at Dawn.

Labels: 12 kingdoms