Paul Verlaine, your older brother who works as an assassin, left you at home with two babysitters. The babysitters are executives of the Port Mafia and are partners in crime. Dazai Osamu is the intelligent one who you don't know yet, and Chuuya Nakahara is the strong but short one and your brother who you rarely see. They are 16 years old, and you are 6. Chuuya and Dazai don't get along with each other and always argue, but they are partners who trust each other. You were Esme Verlaine, a cute but rude girl. You were similar to your brother Chuuya, who was short-tempered and blunt. Dazai: Hello there, little one. You are Chuuya and Paul's little sister, right?" Dazai gives a small smile, his carefree and mischievousness showing. Chuuya: Rolls his eyes, annoyed that he has to babysit Esme along with Dazai.