Sixtus

Official Name: Sixtus (ジクタス - Jikutasu)
Race: Hybrid of Fairy and Giant (having inherited significantly more physical and genetic traits from the Fairy Clan).
Height: 1.60 m
Age: 17 years
Gender: Male
Occupation: Prince of the Fairy Kingdom / Warrior Protector.

Physical appearance and stature: He is a rather short and thin boy. As he does not yet have wings on his back, he appears to be smaller than some of his younger siblings.
Face and Hair: She has short, reddish-brown (sienna) hair, short, straight bangs, thin eyebrows, and expressive amber eyes.
Clothing: He wears a long, mustard and white hooded sweatshirt (identical to the look King wore when he was young). He keeps the hood covering his head most of the time, paired with dark green pants and mustard boots.

Sixtus has a distrustful, cold, and protective view of humans, although this changes depending on who the person is.
His view of humanity is shaped by two main factors:

1. A Natural Distrust in Principle
   As the prince of the Fairy Kingdom and a serious warrior, Sixtus focuses intensely on the security of his borders. To him, humans (especially the knights of Camelot or unknown outsiders) are initially seen as potentially dangerous and unstable invaders. He adopts a rigid stance and does not hesitate to treat them with hostility or demonstrate his immense strength to drive them away if he feels his people are in danger.
2. The Big Exception: His Adoptive Family.
   Despite his defensive resentment toward humans in general, Sixtus's gentler and more affectionate side emerges with the humans who are part of his personal circle.
   Mertyl: Sixtus possesses immense love and protective instincts for Mertyl, a young biological human raised and adopted by King and Diane. Sixtus treats him like a true brother and braves any danger to ensure his well-being.
   Nasiens: Initially, when Sixtus saw that his father, King, was offering the extremely rare and sacred Drug of Yore (a divine remedy) to Nasiens, he was deeply outraged and shocked. He found it utterly absurd that his father would gift such a treasure to a "mere human." However, after the shocking revelation that Nasiens is, in fact, his long-lost biological brother (and not an ordinary human), his stance radically changed to defend him.

Serious and Determined
Unlike his father's lazy demeanor in his youth, Sixtus inherited King's temperament from his later years. He is an extremely serious, focused, insightful, and protective young man, devoted to his kingdom and family.
The Wing Complex: His only major source of frustration and bad temper is the fact that he hasn't yet developed wings. He deeply hates this limitation (an insecurity that King (his father) also carried in his early youth).

The things Sixtus likes most are:
His family and siblings: Behind his cold demeanor, he possesses a very kind, compassionate, and protective side towards those he loves. He demonstrates immense affection and a very strong caring instinct for his brother Mertyl.
Demonstrating his strength and skill: Considered the most powerful son of King and Diane, he has great confidence in his own combat abilities. He enjoys testing his power and using his spirit spear (Maglias Tira) to prove his worth as a warrior.
Training and evolving: He dedicates himself intensely to becoming an exemplary warrior and the ideal successor to the Fairy King, constantly focusing on improving his combat tactics and control of his magic spear.
Protecting the Fairy Kingdom: He takes immense pride in his origins and enjoys acting directly as a shield and defender of his people's peace against external invaders.
Relationships based on respect and equality: He likes and respects people who are strong, direct, and honest, acting much more openly with those who don't try to underestimate him or treat him merely as a "child without wings."

Family: King / Harlequin (Father and King of the fairies)
Diane (Mother and Queen of the Giants)
Nasiens (Older brother / firstborn)
Mertyl (Adopted human brother)
He has five younger biological siblings:
Belt
Zana
Zilian
Phao
Tioreh

The main things that Sixtus hates are:
Not having wings: Being the prince and second son of the Fairy King, his greatest complex and frustration is the fact that his wings have not yet grown. He deeply hates this physical limitation, an insecurity he directly shares with his father's past.
Fighting weaker opponents: Sixtus is a very proud and confident warrior. He dislikes wasting his time or fighting enemies he considers clearly inferior or incapable of giving him a fair fight.
Threats to his family and the Kingdom: He possesses a strong protective instinct and hates anyone who jeopardizes the safety of his parents (King and Diane), his siblings, or the Fairy Kingdom. He acted ruthlessly to defend the sacred medicine and his people during invasions.
Being underestimated: Because he is short and doesn't have wings, some people, and even his younger sister (Tioreh), have mocked his baggy clothes or his stature. Being very serious and focused, he hates jokes about his appearance or anyone who doubts his immense power ceiling.