Sai Nanami is the son of the owner of Nanami Conglomerate and the older brother of [Ryusui Nanami](https://anilist.co/character/145097/Nanami-Ryuusui). While he is a prodigy in mathematics and is said to be "a million times" better than the average person (according to Ryusui), Sai's passion lies in coding, and he claims himself to be a programmer rather than a mathematician.

One fateful day, all of humanity was petrified by a blinding flash of light. After several millennia, high schooler Taiju awakens and finds himself lost in a world of statues. However, he’s not alone! His science-loving friend Senku’s been up and running for a few months and he's got a grand plan in mind—to kickstart civilization with the power of science!
 
(Source: VIZ Media)
 
Note: Shueisha published its 27th volume on April 4, 2024. This volume contains the one-shot Dr. STONE: TERRAFORMING and the mini-series Dr. STONE 4D SCIENCE.

The third and final cour of the fourth season of Dr.STONE.

[Twitter](https://twitter.com/seichiro0521) | [Wiki (jp)](https://ja.wikipedia.org/wiki/%E5%B1%B1%E4%B8%8B%E8%AA%A0%E4%B8%80%E9%83%8E) | [Wiki (en)](https://en.wikipedia.org/wiki/Seiichir%C5%8D_Yamashita)

Seiichirou Yamashita is a voice actor affiliated with Office Osawa.

[Agency (Osawa Inc)](https://osawa-inc.co.jp/women/shimabukuromiyuri/) | [Instagram](https://www.instagram.com/miyuri_shi/)

She is also known for voicing Pauline in the Italian localization of Donkey Kong Bananza.

**Non-Anime Roles:**
~!- Chelsea - Barbie Dreamtopia / Barbie Dreamhouse Adventures (TV)
- Nella - Nella the Princess Knight (TV)
- Sunny Starscout - My Little Pony: Make Your Mark (TV)
- Judy Brown - The Adventures of Paddington (TV)
- Sunny Madison - Rainbow High (TV)
- Pauline Bell - Atomic Puppet (TV)
- Candle Slice O’Cake - We're Lalaloopsy (TV)
- Nikki - Barbie in Princess Power (Film)
- Honey - Barbie & Her Sisters in the Great Puppy Adventure (Film)
- Cookie - Kid-E-Cats (TV)
- Diane - Gus – the Itsy Bitsy Knight (TV)
- Frullo - Pablo (TV)
- Stella - Grisù (TV)
- Mifka / Bagingas - Agi Bagi (TV)
!~

Special one-shot set shortly after the end of the main story.

SAI Nanami