As long as they don't make the mistake a lot of Japanese companies did and try Westernising too much, they'll continue their success:
“We are very happy with the global success of Nioh,” Koinuma told MCV. “This game has been long in development and has been created with all the creative force of our company behind it. The positive reviews and strong performance has truly been a wonderful validation of our efforts so far, as has the overwhelming reception from the players themselves.
“With the invaluable help of Sony Interactive Entertainment, we released two early demos, Alpha and Beta, and we were able to give players all over the world a teaser of what we were planning for them while simultaneously being open to their feedback.
“As a result we believe we were able to adapt to their expectations and reach out to a brand new audience that hadn’t played our games in the past. In that, Nioh has taught us a lot of valuable lessons and has definitely helped open up an entirely new audience for us.
“Nioh’s success, as well as the recent western success of titles like Attack on Titan: Wings of Freedom and Dead or Alive, is proof that if we follow the right approach and listen to the needs of the players they will embrace our titles and help our company grow further.”
http://www.mcvuk.com/news/read/koei-tecmo-nioh-s-opened-a-brand-new-audience-for-us/0179046
The PS5 Exists.
