Below you will find a step-by-step guide to Chapter 8 of Judgment - A Broken Bond.
Go to meet the rest of the crew at the Genda Law Office. Then take a taxi and drive to Kamurocho PD Station. After the cutscene, you'll have to find a way to talk to Matsugane. To complete the case, go to the Charles entertainment center and go down the stairs.
Wait for a call from Higashi. Then take a taxi and go to Kamuro Kikunoya. You will fight with Higashi and a large group of Yakuza. Try to avoid all blows and get rid of small enemies as soon as possible. In the end focus on Higashi - Kaito will help you in battle.
Go to a meeting with Tsukumo, and wait for a call from a friend. Then go to Tashiro's place of residence, defeat the man and wear his clothes. After that, go to the Matsugane family headquarters and start bugging the place. Your goal is to place the wiretap in the electrical sockets. Then you have to put a wiretap in the Patriarch's office - you have a total of 5 minutes for everything.
Eventually, you will be caught and have to defeat enemies. Then run to L'amant, and talk to the players. Go to the woman in purple and play poker with her, and you will learn about the hidden casino in the city. Go to the Champion District to find the Gambling Hall. In the dialogue options choose: Three Times, Can I talk to Moon, Chateabriand, blue.
You will enter inside where after the cutscenes you will have to defeat Hamura and his men. Kaito is with you, so try to fight safely and do not let yourself be surrounded. After the cutscene, you will see that Hamura runs away and the casino starts to burn. The chapter will come to an end.