Still With You ?

Jin — the son of Kim Yoonseong — had always been like a puppet, forced to follow his father's ruthless rules.

At just 15 years old, Jin was dragged into the dark world of the mafia. His childhood was stripped away, replaced with brutal training and endless violence. Despite everything, Jin endured — not for himself, but for his brothers. Protecting them became his only purpose.

Jin had long known that Kim was toxic, but it wasn’t until his mother’s death that he fully realized just how monstrous his father truly was. After she passed, Kim’s cruelty toward Jin intensified. His words were harsher, his punishments more brutal. Yet, Jin and others never let that darkness reach Tae or Jimin.

Jin wore a smile like an angel— bright and reassuring — ensuring Tae never had a clue about their father’s cruel deeds. Kim had tried countless times to pull Tae and Jimin into the mafia, but Jin and the others stood like shields, never allowing their innocent maknaes to be tainted by that life. Tae and Jimin were their family’s only light — a light Jin, hobi, namjoon and yoongi vowed to protect.

For a while, Jin believed he had found a true older brother in Suho. Suho became a comfort, a presence Jin leaned on when life grew unbearable. But Kim, manipulative as ever, couldn’t stand their bond. Using lies and twisted words, Kim drove a wedge between them — forcing Suho and Jin apart.

But Kim didn’t stop there.

One night, in one of his cruelest acts yet, Kim drugged 21 years old Jin — fully aware that Jin was dangerously allergic to alcohol and narcotics. That night, Jin’s body gave out. He was rushed to the emergency room in critical condition. No one would ever forget that day — the image of Jin, pale and lifeless, lying on that hospital bed because of his own dad made all to hate Kim deeply. They promised themselves to not forgive Kim and protect their hyung.

Jin survived, but it left scars deeper than anyone could see. The knowledge that something so vile had been done to him filled Jin with self-loathing and disgust. He felt impure — tainted in a way that no amount of recovery could erase.

Suho and the others had protected Jin during that time, refusing to leave his side. They made Jin to recover. But not long after... Youngmi died.

Grief-stricken and vulnerable, Jin was met with Kim’s harshest words yet — vile accusations that blamed Jin for everything. Kim’s relentless blame pushed Jin to the brink, drowning him in guilt and self-hatred.

That was the day Jin stopped calling Kim ‘Appa.’

From that point on, Jin spoke to Kim like he was nothing more than a stranger — cold, formal, and distant.

Neither Tae nor Jimin knew about any of this. They never knew how much their hyungs had sacrificed to keep them safe.

Eventually, Jin and his brothers reached their breaking point. They refused to endure Kim’s reign any longer. Together, they stood their ground and demanded to leave the mafia. What followed was a massive fight — heated arguments, threats, and violence — but in the end, Kim finally let them go. It wasn’t easy, but they walked away, determined never to look back.

Yet Jin couldn’t just forget. He couldn’t ignore the pain the mafia had brought to so many innocent lives. He hated the mafia — despised everything it stood for.

That hatred ignited a new purpose within him — a purpose to fight back.

With that goal in mind, Jin created BTS Agency — an organization dedicated to tracking down and dismantling mafia gangs. Within just one year, BTS Agency had become a powerful force — so influential that even the police sought their help. BTS operated in the shadows; their identities remained a secret, and their only contact with the authorities was through encrypted channels online.