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Kaguya's cardiologist Dr. Shozo Tanuma. In the 1st movie, Tanuma and the narrator are portrayed by the same person.

And it's actually said explicitly

the anime series the supposed narrator doesn't yet do this...

Kaguya's cardiologist Dr. Shozo Tanuma. In the 1st movie, Tanuma and the narrator are portrayed by the same person Jiro Sato.

And it's actually said explicitly

I'm the person in charge of the narration for this story.

the anime series that the supposed narrator doesn't yet do this...

In the dub, Ai Hayasaka could be the narrator because AmaLee both voices Ai and dubs the openings.

In the dub, Ai Hayasaka could be the narrator because AmaLee both voices Ai and dubs the openings. This also would explain why in the chapter titles, as well as the actual title, Kaguya is called Kaguya-sama.

Of course we see initially at some point in the anime series the supposed narrator doesn't yet do this...

And it's actually said explicitly

Of course we see initially at some point in

the anime series the supposed narrator doesn't yet do this...