The Armed Detective Agency, aka the ADA, had infiltrated the Port Mafia's base, their truce had already ended, and they know they had already planned something, so they decided to initiate the battle.

Ranpo had come along, not like he could do much in a physical altercation, but he was still incredibly smart.

Fukuzawa, Dazai, Yosano, Atsushi, Kenji, Kunikida, Kyoka, Jun'ichiro, and Ranpo were walking through one of the many halls of the base, but so far, they hadn't seen or heard anybody, which was extremely odd.

Kunikida: "Hm... It's odd that we haven't come across anyone yet."

He says, pushing his glasses up his nose as he continues walking, scanning their surroundings carefully as they walk.

Dazai: "Now, now~ Don't jinx us, Kunikida-kun~"

He says casually as he walks with his arms behind his head.