Actor profile

Seiichiro Nagata

9th July 1998 Shizuoka Prefecture, Japan Acting

In 2016, he made his acting debut in the 3rd season of the musical “The Prince of Tennis”. On October 2, 2017 he transferred from Watanabe Entertainment to SUI Co., Ltd. He is active in 2.5 stages and Musical Touken Ranbu as Murakumo Gou. In November 2023, he appeared in "Kamen Rider Gatchard" and " Kamen Rider Gatchard VS Kamen Rider Legend" as Houou Kaguya Quartz. He left SUI Co., Ltd. on April 30, 2024 and became a freelancer starting May 1, 2024. On July 1st of the same year, he opened his first official fan club and official website.

24 Movies 7 TV Shows 32 Credits

Filmography

Movies & TV Shows

Musical Touken Ranbu: Gou on Stage Countdown Party poster

Musical Touken Ranbu: Gou on Stage Countdown Party 31st December 2025 as Murakumo Gou

Kakegurui Stage 5th September 2025 as Ryota Suzui

Musical Touken Ranbu - Medetaya Uta no Homare Hananomai - 10th anniversary poster

Musical Touken Ranbu - Medetaya Uta no Homare Hananomai - 10th anniversary 29th July 2025 as Murakumo Gou

Musical Touken Ranbu: Gou on Stage Zepp Tour Reboot poster

Musical Touken Ranbu: Gou on Stage Zepp Tour Reboot 3rd May 2025 as Murakumo Gou

Touken Ranbu: The Musical - Gou on Stage Zepp Tour Reboot poster

Touken Ranbu: The Musical - Gou on Stage Zepp Tour Reboot 3rd May 2025 as Murakumo Gou

Labyrinth Opera: Pretty Boy Detective Club Continued poster

Labyrinth Opera: Pretty Boy Detective Club Continued 16th March 2025 as Michiru Fukuroi

No. 1 Sentai Gozyuger Anniversary Discussion poster

No. 1 Sentai Gozyuger Anniversary Discussion 9th February 2025 as Kamen Rider Legend (voice)

Musical Touken Ranbu: 9th Anniversary Festival poster

Musical Touken Ranbu: 9th Anniversary Festival 5th October 2024 as 村雲江

Kamen Rider Gotchard: Final Stage poster

Kamen Rider Gotchard: Final Stage 28th September 2024 as Ho-Oh Kaguya Quartz/Kamen Rider Legend

Kamen Rider Gotchard Final Episode: You and Me, We've Got CHEMY×STORY - Director's Cut Version poster

Kamen Rider Gotchard Final Episode: You and Me, We've Got CHEMY×STORY - Director's Cut Version 15th September 2024 as Ho-Oh Kaguya Quartz / Kamen Rider Legend

Kamen Rider Gotchard: The Future Daybreak poster

Kamen Rider Gotchard: The Future Daybreak 26th July 2024 as Ho-Oh Kaguya Quartz / Kamen Rider Legend

Musical Touken Ranbu: Gou on Stage Zepp Tour poster

Musical Touken Ranbu: Gou on Stage Zepp Tour 20th December 2023 as Murakumo Gou

Musical Touken Ranbu: Gou on Stage ~New Satomi Hakkenden~ poster

Musical Touken Ranbu: Gou on Stage ~New Satomi Hakkenden~ 30th November 2023 as Murakumo Gou

Nanashi: Seventh Special Cause of Death Department: The Stage poster

Nanashi: Seventh Special Cause of Death Department: The Stage 5th November 2023 as Tsuyobi

Psychic Detective Yakumo: Bias of Thought poster

Psychic Detective Yakumo: Bias of Thought 1st February 2023 as Yaguchi

Musical Touken Ranbu ~Shinken Ranbu Sai 2022~ poster

Musical Touken Ranbu ~Shinken Ranbu Sai 2022~ 8th May 2022 as Murakumo Gou

Mob Psycho 100 (Crash! Claw's 7th Branch) poster

Mob Psycho 100 (Crash! Claw's 7th Branch) 13th February 2022 as Shou Suzuki

Labyrinth Opera: Pretty Boy Detective Club poster

Labyrinth Opera: Pretty Boy Detective Club 10th January 2022 as Michiru Fukuroi

Anaden vol.2 "Nosferatu in the Mist - The Legend of Dracula" poster

Anaden vol.2 "Nosferatu in the Mist - The Legend of Dracula" 23rd September 2021 as Dracula/Vlad III

Musical Touken Ranbu: Tokyo Kokoro Oboe poster

Musical Touken Ranbu: Tokyo Kokoro Oboe 23rd May 2021 as Murakumo Gou

Brain Crash Theatre [Dramatical Murder] poster

Brain Crash Theatre [Dramatical Murder] 29th December 2019 as Aoba Seragaki

Mob Psycho 100 ~Ura tai Ura ~ 6th February 2019 as Sho Suzuki

Musical The Prince Of Tennis Concert: Dream Live 2018 poster

Musical The Prince Of Tennis Concert: Dream Live 2018 8th April 2018 as Kikumaru Eiji

Musical The Prince Of Tennis Concert: Dream Live 2017 poster

Musical The Prince Of Tennis Concert: Dream Live 2017 26th May 2017 as Kikumaru Eiji

After Moving Seats, The Boy Behind Me Has A Crush On Me poster

After Moving Seats, The Boy Behind Me Has A Crush On Me 6th August 2026 as Ten Mayama

Kamen Rider: Reiwa's Gorgeous Sports Day poster

Kamen Rider: Reiwa's Gorgeous Sports Day 17th August 2024 as Kamen Rider Legend (voice)

Kamen Rider Gotchard Short Anime: Gotcha the Seven Mysteries of Furasu High! poster

Kamen Rider Gotchard Short Anime: Gotcha the Seven Mysteries of Furasu High! 27th April 2024 as Houou Kaguya Quartz

Kamen Rider Gotchard VS Kamen Rider Legend poster

Kamen Rider Gotchard VS Kamen Rider Legend 5th November 2023 as Houou Kaguya Quartz / Kamen Rider Legend

Kamen Rider Gotchard 3rd September 2023 as Ho-Oh Kaguya Quartz / Kamen Rider Legend

Nanashi: Seventh Special Cause of Death Department poster

Nanashi: Seventh Special Cause of Death Department 16th January 2023 as Tsuyobi

Kamen Rider 3rd April 1971 as Houou Kaguya Quartz / Kamen Rider Legend