Naoki Hamaguchi, the director behind the ongoing Final Fantasy 7 Remake trilogy, has spoken about what comes after his three-part meta saga concludes. He's both open to working on something entirely new and is pretty interested in finding a way to make Final Fantasy appeal to newer generations that are statistically less interested in the long-running series.
Asked about whether he wants to stick with Final Fantasy or do something totally unrelated, in an interview with Nintenderos, Hamaguchi leaves the door wide open.
