There is always a huge gap between ideal and reality, and Shu finally realized this after Osamu Dazai left.
The Three Moments concept has changed from the initial mutual help and containment to mutual non-interference. When faced with the invasion of Yokohama by external forces, the Armed Detective Agency and the Port Mafia operate independently, and the special agent department is suspended.
Ps:
1. CP is double black, Dazai is the favorite of the group.
2. OOC warning, the author only has imagination but no writing skills, please forgive me.
3. Updated from time to time.
4. It is secretly established that Dazai made a deal with Shu. After Dazai died, Shu erased his existence. The leader of Port Mafia is still Mori Ogai.
Intention: Based on the if line, create a happy ending.