"When you work in the entertainment industry. The face is all-important An idol is just an illusion. The fans don't care what's inside. All they see is the face."
Naoki Katsuya is a chief member of Omi Alliance and he is the president of an entertainment company Osaka Talent and the patriach of Ouska Enterprises. He is a close friend Goro Majima and Mirei Park and a hidden ally in Yakuza 5.
Katsuya used to be an action film actor during his younger times. However, he suffered a terrible injury and quits. At some point, he met Goro Majima and Mirei Park and three of them become friends. After Majima divorced with Park, he came in contact several times with Majima.
Yakuza 5 Edit
During Yakuza 5, Katsuya was visited by Akiyama to discuss about the death of Mirei Park. Katsuya says that he has nothing to do with it in which Akiyama doubts about it. Katsuya then writes a paycheck of 10 million for Akiyama in order to convince him to leave.
He later arrives to save Haruka after she was kidnapped by his right-hand man, Kamon Kanai, and return her back to Dyna Chair. Eventually Katsuya makes a secret phone call to Haruka in order for her to deliver the letter to him in person alone, threatening to harm the Sunshine Orphanage if she didn't comply, while in truth he wanted to get the letter before Kanai could while ensuring her safety. However Kanai acted before Katsuya could reach Haruka and surrounded her along his men at the Osaka Station. Akiyama managed to save her and Katsuya punishes Kanai at his office for his action.
At the final chapter, he knew that something bad will happen to Haruka during her performance at Tokyo Dome and talks with the event organizers in order to postponed the concert. He later calls in Akiyama and offers him 300 million so that T-Set will replace Haruka in Tokyo Dome, in which the latter obviously refused. However, he paid off the money himself and manage to have Haruka's concert postponed, leading Kiryu, Saejima, and Watase to storm Kamurocho Hills to confront him. All four of them fight with each other in order to lure the mastermind into the open. Katsuya fights Saejima and got defeated by him. He was later shot by Kurosawa in order to protect Watase and send into the hospital.
He later reappeared with Daigo during the final battle and rescued Saejima and Majima from Kurosawa.