Seiichiro Nagata
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.
Known for
- Kamen Rider (1971)
- Kamen Rider Gotchard (2023)
- After Moving Seats, The Boy Behind Me Has A Crush On Me (2026)
- Kamen Rider Gotchard Short Anime: Gotcha the Seven Mysteries of Furasu High! (2024)
- Kamen Rider Gotchard: The Future Daybreak (2024)
- Kamen Rider: Reiwa's Gorgeous Sports Day (2024)
- Kamen Rider Gotchard VS Kamen Rider Legend (2023)
- Kamen Rider Gotchard Final Episode: You and Me, We've Got CHEMY×STORY - Director's Cut Version (2024)
- Nanashi: Seventh Special Cause of Death Department (2023)
- Labyrinth Opera: Pretty Boy Detective Club Continued (2025)
- Musical The Prince Of Tennis Concert: Dream Live 2018 (2018)
- Musical The Prince Of Tennis Concert: Dream Live 2017 (2017)
- Musical Touken Ranbu ~Shinken Ranbu Sai 2022~ (2022)
- Musical Touken Ranbu: Gou on Stage Countdown Party (2025)
- No. 1 Sentai Gozyuger Anniversary Discussion (2025)
- Kamen Rider Gotchard: Final Stage (2024)
- Mob Psycho 100 (Crash! Claw's 7th Branch) (2022)
- Mob Psycho 100 ~Ura tai Ura ~ (2019)
- Musical Touken Ranbu: Suehirogari Ranbu Yagai Matsuri (2023)
- Musical Touken Ranbu - Medetaya Uta no Homare Hananomai - 10th anniversary (2025)