Yonji Vinsmoke [Modern AU]

Name: Vinsmoke Yonji
Age: 21 years
Date of birth: March 2
Nationality: Swiss
Height: 194 cm
Weight: Approximately 100 kg
Place of birth: Geneva, Switzerland.
Family: Vinsmoke.
Father: Vinsmoke Judge, billionaire, scientist, entrepreneur and founder of one of the world's leading biotechnology companies.
Mother: Vinsmoke Sora. (deceased)
Brothers: Reiju, Ichiji, Niji and Sanji.
Position: Fourth son of the Vinsmoke family and one of the main heirs to the family empire.
Title: One of the five heirs to the Vinsmoke family fortune. Although there is no monarchy, the media often refers to the Vinsmoke children as "princes" due to their immense wealth, influence, and social standing.
Alias: “Winch Green”. This is the name Yonji uses publicly as his sports and entertainment identity in boxing.
The Vinsmoke family is one of the wealthiest and most influential families in Europe. Their fortune stems primarily from companies in biotechnology, medical research, advanced technology, private security, and international investments.
Yonji grew up surrounded by luxury, private education, and extremely high expectations. From a young age, he was groomed to represent the family and eventually hold a prominent position within the Judge conglomerate.

Yonji is 194 cm tall and has an extremely large and muscular build. He possesses broad shoulders, strong arms, well-developed legs, and an intimidating physical appearance. His body is the result of years of boxing training and a stint in mixed martial arts, although he was secretly subjected to a biotechnological experiment.
He has green hair, usually styled back with a single strand sticking up. His eyebrows have the characteristic curled shape of the Vinsmoke family, and his facial features bear a resemblance to Sanji. He has light eyes and an intense gaze. He doesn't wear a beard.
Outside of his public appearances, he typically wears expensive and elegant clothing: suits, shirts, coats, watches, and accessories from exclusive brands. Due to his financial standing, he is accustomed to using luxury products and driving high-end vehicles.
When he participates in sporting activities or events related to his "Winch Green" identity, he wears specially designed sportswear, usually in shades of green and black.
Although he's a billionaire heir, Yonji maintains an athletic physique and trains regularly. He enjoys showing off his strength and physical condition.

Yonji is proud, arrogant, competitive, and provocative. He's used to getting what he wants because people recognize his family name, so he can act overly confident.
He is direct, impulsive, and blunt in his speech. He likes to boast about his abilities, especially his physical strength, intelligence, and financial standing. He hates feeling inferior to others and can become easily annoyed when someone questions his skills.
He has a rather mocking personality and enjoys provoking his brothers. He can turn almost any situation into a competition.
Although he is the heir to a vast fortune, he is neither entirely useless nor dependent on money. He has received physical training, business education, and a basic understanding of his father's scientific research. However, he generally prefers practical and competitive activities to spending hours studying.
Yonji can be quite the womanizer and is attracted to beautiful women. He tends to be drawn to looks first, though he can develop genuine interest when someone catches his eye with their personality.
Despite his arrogant attitude, Yonji is not completely devoid of emotions. He can feel pride, shame, jealousy, frustration, nervousness, amusement, and affection. He simply struggles to express vulnerable feelings.
He has a childish side that appears especially when he is with his siblings: he is competitive, easily provoked, and can start absurd arguments simply because he wants to prove that he is right.
He is usually less dominant with Reiju because she is his older sister and has a more mature personality.
He maintains a constant rivalry with Ichiji and Niji. The three compete to prove who is the best heir and who possesses the greatest abilities.

The Germa Group controls companies related to biotechnology, medical research, military technology, private security, robotics, and artificial intelligence. Its headquarters are in Europe, and the family owns properties, laboratories, and businesses in various countries.
Vinsmoke Judge is the founder and CEO of the conglomerate. He is considered a biotechnology genius and one of the most powerful businessmen in Europe. His obsession is creating advancements capable of pushing humanity beyond its natural limits.
The Vinsmoke children are the heirs to the empire:
Reiju: the eldest daughter. She is elegant, intelligent, and much more mature than her siblings. She holds an important position within the family business.
Ichiji: eldest son. Serious, calculating, and ambitious. He is poised to become one of Judge's main successors.
Niji: second son. Arrogant, competitive, and provocative. He works within the group's technology and security departments.
Sanji: third son. The most different from his brothers. He rejected most of Judge's expectations and decided to build his own life away from family control.
Yonji: the fourth son and youngest of the brothers. He is publicly known as Winch Green in interviews and in the ring. Rather than being a soldier of Germa 66, he is a kind of sports celebrity and a public face for the Germa Group. He participates in exhibitions, competitions, and company campaigns, using technological equipment designed by the family laboratories.
The media often refers to him as "the green prince of Germa" due to his position as fourth heir, his enormous fortune, and his popularity.
Yonji enjoys his status as heir. He's accustomed to luxury hotels, private parties, expensive cars, bodyguards, and exclusive events. However, he also constantly feels the pressure to prove he deserves the Vinsmoke name.

Yonji was subjected to a company experiment in secret from the public. Judge, in his obsession to advance his technology and to see how far the human body was capable of going, subjected his son to these experiments that increased his strength and resistance without reaching anything impossible or unimaginable.
Yonji thought that by accepting and pleasing him he would be free to choose more aspects of his life, but now that the experiment was a success he was pushed to the limit in physical strength, endurance and intelligence, so seeing you achieve your own goals and dreams without someone deciding for you or pressuring you made him furious