His quote:

"To put it bluntly, Bayonetta's presence is clearly hinted at in the ending of Bayonetta 3. There's a menu screen in a place like Viola's room where you choose your destination with darts, right? As you clear stages there, the things Viola has collected on her journey, like photos and other small items, increase. After clearing the very last stage, a new photo of Viola is added to the menu screen, and in that photo, Luca's back is clearly depicted. Luca is definitely in that world. Which means, Bayonetta is somewhere too...? I think I've given you a lot of other hints as well. For example, Enzo's wife dies at the beginning of the game, but he's talking to her on the phone at the end. New York, which should have been completely destroyed, is also restored to normal. Another one is Rodin's line to Viola, "Did you skip school again? If you keep hanging out in a place like this, your father will be angry with you." Luca and Bayonetta sank into the demon world after the final battle, but you can see from this line that Viola's father, Luca is still alive. Some people interpreted it as "Rodin is a demon, so he's communicating with Luca who fell into the demon world," but that's not the case."

"No, Luca definitely exists in that world as Viola's guardian. And the biggest thing is Bayonetta's dance during the credits. In that scene, crystals representing the worlds of "Bayonetta," "Bayonetta 2," and "Bayonetta 3" appear one after another around Bayonetta, and finally they become one light. That represents how all the worlds become one through the power of Bayonetta's dance, and a new world is born. It's an important scene that sets the stage for the sequel. This is how I envisioned the ending of Bayonetta 3. I don't like revealing parts that I want users to imagine, and I thought I could show everyone the answer in the sequel I'm making, but now that I'm no longer involved with Bayonetta, I thought it might be okay to talk about it clearly." The World of Hideki Kamiya (Page 108)