Byakuya Ishigami ( (いし) (がみ) (びゃく) () Ishigami Byakuya) was Senku Ishigami's adoptive father. He was an astronaut residing on the International Space Station in space when the mass-petrification on Earth's surface occurred.


Byakuya Ishigami anime

As a middle age man, Byakuya grew his hair just the the nape of his neck and has a buzz-cut beard and mustache. His hair is blond and his eyes are brown, like his son.

Before he died of old age while panning for metals, his appearance greatly resembled a much taller version of Kaseki. Most noticeably the beard, facial features, and overall build.


Byakuya was a very supportive and caring father, who loved his son Senku. He went as far as selling his car to give Senku the materials he needed to become a genius in science. He was a caring person who was willing to work hard in order to give Senku a great future.


When Senku first showed signs of being interest in science, Byakuya did not hesitate to sell his car in order to give Senku the opportunity to explore his scientific interest. But unlike Senku, Byakuya was a lax and carefree man. He liked to talk about poetry and fairy tales and would get scolded by Senku because of it. Nonetheless, Senku influenced a lot of Byakuya's personality and behaviour. Although he initially gave up on his dream as an astronaut, he was once again motivated to become one when Senku tried to help him overcome his weakness of not being able to swim in clothes.

He was able to avoid the petrification on Earth as he went on a long term mission to outer-space after becoming an astronaut. After returning to a petrified Earth, he spear-headed a colony of survivors and founded a village in the hopes that it would aid his son in saving civilization, Ishigami Village.

Byakuya spent many years after the petrification gathering rare metals that he knew would be essential for Senku once he was revived (since most of them had been stripped from the Earth by man). He continued to do this, even when he was the last survivor from his crew, and his children didn't understand the purpose of gathering them.

Eventually, after many years, he became so old, he collapsed in a stream one night and died staring at the reflection of the stars, his last thoughts being of Senku.


Vs. Tsukasa Arc

In Chapter 10, Byakuya is shown in a flashback of how he sold his car in order to give Senku the opportunity to explore his scientific curiosity.

Village Origins Arc

Byakuya is later shown in Chapter 42 in a flashback of Senku's memories, in which Byakuya wasn't able to become an astronaut because he couldn't swim in clothes. Senku, wanting to help his father, developed a suit with Taiju that used electric signals to forcibly move a person's body, and thus training them with motions. Although the suit didn't help much, it was enough to motivate Byakuya to learn how to swim on his own and became an astronaut. Just before Byakuya took off to space, he went in front of the announcer camera and told Senku that he'll bring back some space souvenirs for Senku. It was then revealed that he returned to Earth after the mass-petrification of humans and founded Ishigami village along with his crew. He created the 100 Stories, a collection of stories that contained survival tips for their descendants, and left a time capsule disc for Senku for when he woke up.


Senku Ishigami

Senku is Byakuya's adopted son. Byakuya supported Senku's research and once sold his car to fund it.

Connie Lee

Lillian Weinberg

Darya Nikitina

Yakov Nikitin

Shamil Volkov

Astronaut Bio


  • Byakuya's name is composed of "byaku" ( hundred) and "ya" ( night) to create Byakuya (Hundred Night), while Ishigami is composed of "ishi" ( stone) and "kami" ( god) to create Ishigami (Stone God).
  • Byakuya stars in his own spin-off manga titled Dr Stone Reboot: Byakuya. Which premiered alongside the original series in Shonen Jump on October 28th.
  • There is a Continuity Error of approximately 10 years with Byakuya's Death when you compare it in Dr. Stone Chapter 115 and in Dr. Stone Reboot: Byakuya Reboot: Chapter 7.

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Dr. Stone reboot: Byakuya
Chapters Reboot: Chapter 1Reboot: Chapter 2Reboot: Chapter 3Reboot: Chapter 4Reboot: Chapter 5Reboot: Chapter 6Reboot: Chapter 7Reboot: Chapter 8Reboot: Chapter 9
ISS Crew ReiByakuya IshigamiLillian WeinbergShamil VolkovConnie LeeDarya NikitinaYakov Nikitin
Others Senku Ishigami
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International Space Station Crew
Males Byakuya IshigamiShamil VolkovYakov Nikitin
Females Connie LeeLillian WeinbergDarya Nikitina
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Pre Petrification Humans
Male Byakuya IshigamiGen AsagiriHyogaRyusui NanamiSenku IshigamiShamil VolkovTaiju OkiTsukasa ShishioUkyo SaionjiYakov NikitinYo Uei
Female Connie LeeDarya NikitinaHomura MomijiLillian WeinbergNikki HanadaYuzuriha OgawaMinami HokutozaiMirai Shishio
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