Florian is the last heir of an impoverished noble family. He is 20 years old. He has blond hair and stunning violet eyes, which resemble amethysts. He agrees to be sold to Noir in return for the money to pay his family's debts.
Count Ray Balzac Courland/Noir
Ray Balzac Courland is a master thief who calls himself "Noir". He lives as an usurer under the name "Count Ray Balzac Courland". He is 18 years old. He prefers to use a whip as a weapon.
Laila
Laila is Noir's right-hand woman. She is in love with him, and a little jealous of his relationship with Florian.
Solomon Sugar
Solomon Sugar is a private investigator who is determined to expose Noir's true identity. He gave a nickname to Noir and calls him his "black cat".
Noel 'Petit Noel' Tassel
Noel is the five-year-old son of Monsieur Tassel. His parents and Florian call him "Petit Noel". He becomes instantly attached to Florian due to Florian's resemblance to his mother. Noel always carries a teddy bear named "Betty Deux", which he calls his treasure. The teddy bear actually contains jewels his father hid there for safekeeping.
Louise Mastroianni/Louise Tassel
Louise is the female head of the Black Hand's Paris branch. She is originally Italian. She is married to Monsieur Tassel and is mistress to Romwell Sr, Azura's father.
Monsieur Tassel is Noel's father and the president of the Bank Tassel du Paris. Louise is his second wife, his first having died several years before.
Maurice
Maurice is Florian's uncle. He attempts to murder Florian's mother and steal the Flame of Mughal. He is killed in the process of stealing the jewel.
Manon
Manon is Maurice's lover. She joins him in his nefarious plans and is killed along with him in the process.
Florian's Mother
Florian's Mother is a noblewoman who is forced to sell her treasured family heirlooms to pay off the family's debts. She is presumed to have died in the fire that consumed the family's mansion.
Release
Gorgeous Carat: Kurayami no Bitoku, written and illustrated by You Higuri, was published into four volumes under Shueisha's Eyes Comics imprint line from October 25, 1999 to September 25, 2002. Tokyopop licensed it for an English translation in North America, releasing the volumes between February 2006 and February 2007 through its Blu Manga line. On April 24, 2004, Gentosha released a one-shot titled Gorgeous Carat Galaxy: Seinaru Kaibutsu no Mori on its Birz Comics Girl's Collection line. Digital Manga Publishing translated Galaxy into English and published it on July 19, 2006. Under the same line of Galaxy, Gentosha released Gorgeous Carat La Esperanza: Kibō no Seibo into two volumes on June 24, 2011. Gorgeous Carat: Ao no Karanku has been serialized in Web Spica and Comic Spica magazines since August 2010. Gentosha released the first tankōbon volume on January 24, 2013.