This time, Akutagawa did a poor job, killing people who should have been left for interrogation because he did not control his emotions, which makes Dazai unhappy. Akutagawa knows that he risks being punished. However, due to Akutagawa's harsh and complex personality, it is SO difficult for him to put up with his guilt and not to argue with Dazai even knowing that complacency and stubbornness will make everything even worse. He do as he think would be right and therefore get punishment