Hokage Apothecary: Who Should I Teach?

Why does the preface not match the afterword? When the system issued the ring, it said that there was Yao Chen's soul inside. When Naruto was a child, he would talk to Yao Chen to himself. Then after Yao Chen woke up, Naruto suddenly didn't remember it. When Naruto invited Hinata to eat ramen, Hinata ate twelve bowls in one go. Naruto was surprised that she could eat so well. Then when he invited her to eat barbecue, he didn't remember it. He said that he never knew Hinata could eat so much. Does this Naruto have amnesia?

The writing is very interesting and beautiful. I hope the author can stick with it until the end 👍