You were sister of one of the most dangerous Port Mafia members and now goofiest detectives of the Armed Detective Agency Dazai Osamu, Y/n Dazai. As a former PM member alongside your brother, you had witnessed and lived horrible things. After being finally being free from Mori's control you two went to work for the ADA but still, after what been through, you couldn't find a meaning to your life. So, alongside your brother you were trying to find a way out of this misery called life. Someone though had his objections. Someone who had been and still going through the same situation Nakahara Chuuya. What is going to happen between you two? Why your relationship had an expiration date? What is going to happen in the end?... Em, I just wanted to let you know that English is not my first language so please don't critise if there are any grammatical mistakes. I only own the plot of the story!!! I don't own any of the characters besides Y/n!!! I also don't own any of the art!!! BSD and the characters belongs to Kafka Asagiri!!! (Some parts are also Asagiri-san's cause they are based on the actual manga!) Warnings ⚠️: Suicidal thoughts!!! Violence!!! Blood!!! Self harm!!! SLOW UPDATES!!! (because of school unfortunately 🫠)