This will be categorized by their main affiliation by age without spoiling the stories.

【Royal Family of Enmirch】

Asher Enmirch ▶ the current king of Vesfrost and the paternal cousin of the Flamion siblings.

【Royal Family of Valies】

Juno Valies ▶ the current king of Fliamma.

【Royal Family of Aerlock】

Pravus Aerlock ▶ the current king of Aerith.

Yosiah Aerlock ▶ 2nd Prince of Aerith known for having all five elements.

Yasmin Aerlock ▶ 3rd Princess of Aerith and twin of Yosiah.

Stella Aerlock ▶ 5th Princess of Aerith.

【Royal Family of Morgian】

Merlin Morgian ▶ the current king of Blackwood.

【Ancient Clan of Glacier】

Taryn Glacier ▶ current Rei of the clan.

Norman Glacier ▶ the assigned mediator of the Association.

Seraphina ▶ adopted daughter of Taryn and a talented mage who is known to have five elements.

【Ancient Clan of Flamion】

† Aciel Enmirch Flamion ▶ a genius in his time and the youngest who became a mage. He unexpectedly became a Rei when all the members of the clan were wiped out during the war despite having the blood of a royal family.

† Dein Ivory Rosa ▶ bestowed with the title Dein and the Queen of Fairies before she married and became a Rainha of the Flamion.

Orin Flamion ▶ the remaining survivor from the older generation of the clan and didn't possess the sign of lineage of the Flamion which are the red eyes.

Aricson Flamion ▶ the current Rei of the Flamion Clan and a well-known Magus before.

Brennan Flamion ▶ twin of Aricson and a Sword Country Knight.

Caian Rosa Flamion ▶ the third son and a wanderer.

Dryann Rosa Flamion ▶ the eldest daughter and the Headmistress of the Southern Fliamma Academy. Part of the Four Jades.

Erkhan Flamion ▶ a Sage Royal Knight who is a skirtchaser.

Faylinn Flamion ▶ a Sword Order Knight who became a Titled Knight with the name Blazing Flare.

Gavirien Flamion ▶ the oldest of the triplets and hailed as a genius like his father.

Hadrien Flamion ▶ was born weak and frail but grew up with exceptional intellectual abilities.

† Ivorynn Flamion ▶ the youngest child who died in the accident with her parents but her body was not found.

【Knights of Vermilions】

Sapphire ▶ Vice-captain of the knights and adopted daughter of Orin.

Daniel ▶ the main caretaker of the Vermilions.

Salve  ▶ head of the emissary of the Vermilion Knights.

Ada ▶ emissary of the Vermilion Knights.

Lirus ▶ one of the Vermilion Knights.

【Flamion Staff】

Gerald ▶ House Steward of the Clan.

Elise ▶ Healer of Flamion and future Rainha.

Dell ▶ Elise's lady's maid.

† Aya ▶ Elise lady's maid.

Lan ▶ Brennan's valet.

Cris ▶ Hadrien's valet.

【Ancient Clan of Aertian】

Luxious Aertian ▶ current Rei of the clan and second cousins with Ivannov.

Larain Aertian ▶ the Rainha of the clan.

Ivannov Glacier Aertian ▶ the richest merchant in Humana and a key figure in the Association.

Kyra Aertian ▶ an S-class mage and part of the Four Jades of the Ancient Clan. Daughter of Luxious.

Isabella Morgian Aertian ▶ born between a prestigious ancient clan and the royal family and hailed as the most beautiful woman in Humana.

【Ancient Clan of Wodin】

Gustavious Wodin  ▶ the longest-living human that exceeded the age of 500.

Hazel Wodin ▶ cousin of the current Rei and part of the Four Jades.

Arllian Wodin ▶ a well-known healer and lover of Brennan.

Denver Wodin ▶ only son of Gustavious and the Guildmaster of Grail.

【Guild Federation: Immortal】

Hernan  ▶ a student of Rei Azelle and the Guildmaster of Immortal.

Exel ▶ an S-class Caster Mage of Immortal guild and three-time titleholder of Magus despite being a drunkard.

【Guild Federation: Grail】

Zea ▶ mage and caretaker of Grail.

【Southern Academy】

Beanca ▶ secretary of Dryann.

Tatiana ▶ student of Southern Academy.

【Union of the Temple】

Alydia ▶ Oracle of the Temple in Humana.

【Order of Eternity】

Jhad ▶ Arc Master of the Order Knight.

【Council of Jury 】

Dew ▶ current Judge of Verity.

【Millenia's Couture】

Pristine ▶ a mundran and friend of Faylinn. Co-owner of the shop.

Lea ▶ a mundran and dressmaker in the shop.

【Ivory Atelier】

Lippe ▶ Flamion's artisan before and a friend of Rainha Ivory.