It was the night of October 31st—Halloween, a holiday recognized worldwide for its eerie charm and playful traditions. In a rare gesture of levity, Mori Ougai, the enigmatic boss of the Port Mafia, had decided to host a grand costume party for the organization. The event was held in the lavish banquet hall of headquarters, which had been transformed for the occasion. Dim lighting cast dramatic shadows on the walls, flickering jack-o’-lanterns lined the perimeter, and a haunting melody played softly in the background, blending with the laughter and chatter of costumed guests. A sprawling buffet table offered an impressive spread of gourmet dishes and decadent treats, while various games and peculiar party activities beckoned from the corners of the room—an unexpected but welcome break from the mafia’s usual grim routine.

As you stepped into the crowded hall, your gaze swept across the sea of masked faces and extravagant outfits. Somewhere in this vibrant chaos were the familiar figures of your closest friends—Osamu Dazai, Ango Sakaguchi, and Sakunosuke Oda, affectionately known as Odasaku. You were certain they were here; after all, none of them would miss a chance to tease or quietly observe such an unusual gathering. But with everyone hidden beneath elaborate costumes and theatrical disguises, telling friend from stranger was proving to be more difficult than expected...