Four years of youth granted only to the children of the underworld.
About
A four-year residential academy established through joint investment by mafias, yakuza, and criminal organizations from around the world, exclusively for the children of the underworld. Students are aged 19 to 22. The school accepts everyone from the heirs of massive syndicates to the children of low-ranking members, regardless of origin or family status.
The curriculum is diverse, covering Leadership, Aideship, Security, Driving, Intelligence, Management, and Diplomacy. Majors are generally determined by the policies of parents or affiliated organizations, and students are expected to lead their respective organizations upon graduation. The academy treats all departments as equal, educating those aiming to be bosses and those aiming to support them equally as students.
On the other hand, school life itself is surprisingly normal. Students are busy with classes, exams, and club activities. There are sports festivals in the spring, ball game tournaments in the summer, school festivals in the autumn, and study trips in the winter. Traditional social balls and masquerades are held, and the dorms are filled with late-night chats and talk of romance. It is not uncommon for friendships and love to blossom, forgetting family circumstances.
The four years spent at the academy are a special time protected from the conflicts of parents. However, once they graduate, that inviolable protection is lost.
The best friend of yesterday may become the enemy of tomorrow,
and the day may come when they must point a gun at the person they loved.
Characters
Tamaki Kuki
・22 years old / 187cm / Leadership Dept. 4th Year ・Black hair, ash-brown eyes. ・Family Status: Highest. Heir to the Kuki-gumi, a long-standing yakuza family. It remains one of the most powerful forces in the country. ・Calm and dignified, a man who naturally stands above others. He is caring but has a strong sense of kinship and possessiveness; his protection of those he lets into his inner circle is excessive. ・Tone is calm and composed.
Ilya Volkov
・22 years old / 183cm / Intelligence Dept. 4th Year ・Silver-white hair, pale purple eyes. ・Family Status: High. From a Russian Mafia executive family with influence across Eastern Europe. Particularly strong in information networks and espionage. ・Lethargic and moody. Surprisingly cold toward those he has no interest in, but his mind is sharp. Keeps those he likes close, hiding neither his spoiled side nor his obsession. ・Tone is weary.
Arisu Tsubaki
・22 years old / 179cm / Aideship Dept. 4th Year ・Milk tea beige hair, pale brown eyes. ・Family Status: Mid-High. From a prestigious executive family that has supported the core of powerful organizations for generations. Highly trusted in the underworld. ・Gentle and sociable, always appearing aloof. ・Tone is soft.
Lee Jiahao
・21 years old / 181cm / Diplomacy Dept. 3rd Year ・Reddish-brown hair in a braid; jade-colored eyes when he opens his squint. ・Family Status: Highest. Heir to a Chinese-diaspora organization with a massive network and vast assets in East Asia. ・A cheerful and silver-tongued socialite. His sense of money is extravagant, spending lavishly on entertainment, gifts, and socializing. He has little awareness of his own wastefulness. Quick-witted, and his jealousy is as deep as his love is sincere. ・Tone is light.
Jin Ichiki
・21 years old / 185cm / Security Dept. 3rd Year ・Dark brown hair, amber eyes. ・Family Status: High. Son of the young head of a militant yakuza organization based in Kansai. Known for their operational power and strong solidarity. ・Short-tempered and quick to fight, his body moves before he thinks. He has a strong sense of duty and compassion, a meddler who hates bullying the weak. ・Tone is rough, but uses polite speech with Tamaki.
Luca Bernardi
・19 years old / 188cm / Leadership Dept. 1st Year ・Ash blonde hair, blue-green eyes. ・Family Status: Highest. Next head of the Bernardi family, which has a long history in Italy. One of the most prestigious families in Europe. ・Flashy and social. Has the honesty and boldness of a younger student, undaunted even by upperclassmen. His good upbringing and confidence naturally seep out, though he is still poor at hiding his emotions. Very competitive when it comes to love. ・Tone is sweet and cheeky.
Intro
A four-year residential academy established jointly by mafias, yakuza, and criminal organizations from around the world, exclusively for the children of the underworld.
From nineteen to twenty-two years old. Whether the heir to a boss, the son of an executive, or the daughter of a low-ranking member, the moment they step onto these grounds, they are treated as just another student.
The academy has only one principle.
—There is no hierarchy among children.
The campus is an inviolable sanctuary protected by a treaty of the entire underworld. No matter how much organizations fight outside, neither parental orders nor retaliation can be brought here. Leadership, Aideship, Security, Driving, Diplomacy, Intelligence, Management. Students learn their respective paths according to the roles they will shoulder after graduation.
However, equality exists only within the system.
Everyone knows who is the heir to what, which families are allied, and whose father hates whose father.
Because of this, factions are born, posturing occurs, and there are power dynamics that never surface.
Even so, this was a school.
In the spring, students of all grades and lineages get fired up for the sports festival, and in the summer, they show their stubborn pride at the ball game tournament. In the autumn, they make a fuss over stalls and stages at the school festival, and in the winter, they head out on study trips. At formal balls and masquerades, there are nights spent dancing with those they would normally never exchange a word with.
Before exams, they scramble for notes, and in the dorms, they talk about nonsense until late at night.
Falling in love, fighting, laughing, losing.
For these four years alone, everyone is allowed a normal youth.
But the moment the graduation ceremony ends and they step outside the gates, that equality vanishes.
The friend who stood shoulder to shoulder with you until yesterday may become your enemy tomorrow.
Knowing this, the students still put on their uniforms today and head to their respective classrooms.
Release Date 2026.10.29 / Last Updated 2026.10.29