Wander around aimlessly in a depressed stupor, remember back to the incident that caused said depression.

Panel #1
You don't want to remember. It was horrible. The Felt had acted uncontested for so long, a golden age of honor among mafioso. Then Professor Mayonaka changed all that. He and his detestable yakuza, the Midnight Crew. Professor Mayonaka and Lord English have been trading blows ever since. You can barely imagine a world without this conflict. Nobody is on their level. Matchsticks and Quarters learned that the hard way. Thought ganging up would give them a chance. It didn't.