For Ogawa this bout marks his second defense of the title and sees him building on some genuine success.
The champion won the title last December, taking a technical decision win over the then unbeaten Rikki Naito, and made the first defense of the belt this past April, when he stopped Satoru Sugita in a bout that was much closer than the score cards suggested. That win over Sugita was Ogawa's 10th straight win, and his 9th stoppage from that 10 fight winning run, showing just how legitimate his power is. Despite the win though he did look genuinely poor, crude and very defensively flawed so will be hoping for a much more complete performance when he returns in September.
As for Matsushita this bout will be his 51st, and potentially his last. He has come up short in 5 other Japanese title fights, losing to Masaaki Serie, Mikihito Seto, Daiki Kaneko and Rikki Naito and fighting to a draw with Yoshikane Nakajima. Saying that he has scored notable wins through his career, including a shock upset win over Dante Jardon, and is experienced, tough and will come to win when he faces Ogawa, knowing the bout will potentially be his last and will almost certainly be his final title fight at the age of 35.
At the moment no other details of the card have been released though we're expecting to see more bouts announced in the near future.