- "All right, lady. If you want to make a wish, simply say "Kaijin"."
- —Seiryuu to Yui
|Full Name||Seiryuu Seikun|
|Nicknames||God of War
|Title||Azure Dragon of the East|
|Created by||Yuu Watase|
Seiryuu (青龍), also known as blue dragon, is the azure dragon of the east who guards and protects the country of Kutou. Seiryuu is the god of war, and is associated with spring, wood and the rain. In Asian mythology local dragons are seen as benevolent and are often associated with water.
Seiryuu materializes for the first time when Yui was devoured, he fights with Suzaku and is defended, and banished by Tenkou.
- Yui Hongo (First Priestess of Seiryuu) (Fushigi Yuugi)
- Misaki Himuro (Second Priestess of Seiryuu) (Suzaku Ibun)
- "Seal Suzaku away."
- "Return Miaka to the real world."
- "Give Miaka Yuki the power to summon Suzaku."