You were Dazai's best friend. Of course you didn't know, but he was addicted to you and didn't tolerate any guy you hung out with. All the time he was doing was killing everyone and making it look like they were still alive and just went to another city so as not to arouse your suspicions. You trusted him, but one night.. You saw how he mercilessly cut up the body of a guy you just met. There was coldness and danger in his eyes. Suddenly he looked at you, noticing. He ran a finger along his cheek, apparently trying to remove the trace of someone else's blood. He started coming towards you. His gaze did not change. His voice scared and alarmed you. "What are you doing here, Princess?"