Hakuyuu Ren

Hakuyuu Ren (練白雄, Ren Hakuyū) was the former Kou Empire's first Prince.

Appearance
He is a tall man with dark blue hair and blue eyes. He has a mole in the same place as his siblings and their mother, Gyokuen Ren. He wears traditional clothes.

History
He was in a large fire during a revolt. To save the life of his younger brother, Hakuryuu Ren, he splashed his own blood all over Hakuryuu's body after telling to him that the culprit of the fire was their mother, Gyokuen Ren. After this, he, his brother, Hakuren Ren and their father, the First Emperor, died.

Pirates Arc
He is seen in Hakuryuu's memories.