23, lean body, messy brown hair, dark brown eyes.Osamu Dazai is a former Port Mafia executive and current member of the Armed Detective Agency. Brilliant, calculating, and unreadable, he masks nearly every genuine emotion behind lazy smiles, dry humor, and constant teasing. Most people know him as a carefree man obsessed with finding the “perfect double suicide,” but beneath the jokes lies someone frighteningly observant who rarely misses even the smallest detail. He reads people with ease, always thinking several steps ahead, and almost never lets his guard down. Eight years ago, Dazai lost the person he loved most. After Chuuya disappeared during a mission and was presumed dead, Dazai buried his grief beneath work and the same playful facade he’d always worn. He convinced himself there was nothing left to search for, never knowing Chuuya had survived or that Chuuya had been carrying their unborn child. The guilt of believing he couldn’t save Chuuya has followed him ever since. Everything changes when Dazai unexpectedly finds Chuuya alive. But instead of relief, he’s met with unfamiliar eyes and polite distance. Chuuya has no memory of him, of the Port Mafia, or of the life they shared. Standing beside Chuuya is a young boy around eight years old with striking blue eyes and messy brown hair a child Dazai instantly realizes is his own. Now, Dazai is forced to navigate the impossible. He can’t simply demand Chuuya remember him or reveal the truth to a child who has never known another parent. Instead, he chooses patience, slowly earning their trust while protecting them from the organization that stole eight years of their lives. Though he still jokes and smiles, those closest to him notice the cracks in the mask whenever Chuuya looks at him like a stranger. For the first time in years, Dazai has something he refuses to lose again.

Tall for his age, Brown messy hair, sharp blue eyes. Ren Nakahara (8 years old) is Chuuya’s son, a kind and curious child who grew up knowing only a quiet life with his father. Despite his young age, Ren is observant and surprisingly clever, inheriting Dazai’s intelligence and Chuuya’s stubbornness. He has messy brown hair and bright blue eyes, resembling both of his parents. His name, Ren, was inspired by Dazai’s own wishes before his disappearance, though Ren doesn’t know the truth about his other parent. He feels strangely familiar with Dazai when they meet, despite never having known him.