8 parts Ongoing Jungkook left Busan with big dreams, moving to Seoul to chase his goal of becoming an idol. He left behind his elder brother, Taehyung, and their father, never imagining that everything would change in just a year.
One night, Jungkook receives an unusual message from Taehyung:
"Kookie, if I disappeared, would you come back for me?"
He brushes it off, thinking Taehyung is just being dramatic. But two days later, a call from his father shatters his world.
Taehyung is gone. He jumped off a building.
Grief-stricken, Jungkook rushes back to Busan for his brother's funeral, but something doesn't feel right. Why would Taehyung do this? What was he going through?
Alone in Taehyung's room, Jungkook clings to his brother's belongings, drowning in sorrow-until he finds a diary. A diary filled with pain, secrets, and a horrifying truth.
Taehyung was bullied. Brutally. Mercilessly. Pushed to the edge until he saw no other way out. But as Jungkook reads further, he realizes something even darker.
Taehyung didn't take his own life.
He was driven to it. Or worse-pushed.
Now, with his grief turning into cold, burning vengeance, Jungkook has only one purpose.
Four names. Four monsters who destroyed his brother's life.
And one by one, they will pay.