Akaso Eiji is a Japanese actor and model, known for playing Ryuga Banjou in Kamen Rider Build. He is currently represented by Tristone Entertainment.
He belonged to the Nagoya model office "FORM JAPAN" when he was in his teens. He was active as a model and talent under the name Mamoru Akaso (赤楚 衛, Akaso Mamoru). In 2010, he joined the local idol group "BOYS AND MEN" in Nagoya, working on stage performances and regular appearances of variety shows. Eiji is said to have left "BOYS AND MEN" in 2011. Originally, he entered the entertainment agency because he wanted to be an actor and not an idol.
He won the Grand Prix at the men's model audition of Samantha Thavasa in 2013, which became the turning point for him to audition in Tokyo at the age of 19. The trigger that lead Eiji to drop out of university and to enter the world of entertainment was a call from the CEO of his current agency in 2014. In 2015, he transferred to his current agency Tristone Entertainment, working as an actor and starring in television dramas and films in his current stage name
Known For

About a Place in the Kinki Region
2025

Inheritance Detective
Nao Haie · (10 episodes)
2025

366 Days
Makiya Minato
2025

Six Lying University Students
Shogo Hatano
2024

What If Shogun Ieyasu Tokugawa Was to Become the Prime Minister
Ryoma Sakamoto
2024

Re: Revenge - At the End of Desire
Tendo Kaito · (11 episodes)
2024

Zom 100: Bucket List of the Dead
Akira Tendo
2023

Turn to Me Mukai-kun
Mukai Satoru · (10 episodes)
2023

Zom 100: Bucket List of the Dead
Refugee Guest 1 (voice) · (1 episode)
2023

Pending Train
Yuto Shirahama · (10 episodes)
2023

Kazama Kimichika: Kyojo Zero
Junji Urihara · (2 episodes)
2023

Soar High!
Umezu Takashi [Mai's childhood friend] · (126 episodes)
2022

ISHIKO and HANEO: You're Suing Me?
Ao Ooba · (10 episodes)
2022

Cherry Magic! THE MOVIE
Kiyoshi Adachi
2022

Hiru
Yuuki Shinomiya · (6 episodes)
2022

The Sunday Runoff
2022

Tales of the Bizarre: 2021 Fall Special
2021

SUPER RICH
(11 episodes)
2021

She Was Pretty
Higuchi Takuya · (10 episodes)
2021

The Great Yokai War: Guardians
Amanojaku
2021

Hakutaka Shirataka Amane no Investigation File
Uzuka Shinsaku
2021

Date My Daughter!
Yuto · (1 episode)
2021

Date My Daughter!
(1 episode)
2021

Cherry Magic! Thirty Years of Virginity Can Make You a Wizard?!
Kiyoshi Adachi · (12 episodes)
2020

Keep Your Hands Off Eizouken!
Kobayashi
2020

Love Me, Love Me Not
High School Boy (voice)
2020

Love Me, Love Me Not
Kazuomi Inui
2020

Gourmet Detective Goro Akechi
Nonaka · (1 episode)
2020

Keep Your Hands Off Eizouken!
小林 (ロボット研究部) · (1 episode)
2020

Hey Sensei, Don't you know?
Kido Riichi · (6 episodes)
2019

Kamen Rider Build NEW WORLD: Kamen Rider Grease
Ryuga Banjou / Kamen Rider Cross-Z
2019

I Shared My Husband
Hideaki Matsuda · (10 episodes)
2019

Kamen Rider Build: Final Stage
Ryuga Banjou / Kamen Rider Cross-Z
2019

Kamen Rider Build NEW WORLD: Kamen Rider Cross-Z
Ryuga Banjou / Kamen Rider Cross-Z
2019

Innocence, Fight Against False Charges
Tokunori Isawa · (10 episodes)
2019

Kamen Rider Heisei Generations Forever
Ryuuga Banjou / Kamen Rider Cross-Z
2018

Kamen Rider Build: Special Event
Ryuga Banjou / Kamen Rider Cross-Z
2018

Kamen Rider Zi-O: Supplementary Plan
Ryuga Banjou · (1 episode)
2018

Kamen Rider Zi-O
Ryuga Banjo / Kamen Rider Cross-Z · (2 episodes)
2018

Kamen Rider Build The Movie: Be The One
Ryuuga Banjou · Kamen Rider Cross-Z
2018

Kamen Rider Amazons Season 2 the Movie: Reincarnation
Hiroki Nagase
2018

Super Hero Festival: Kamen Rider x Super Sentai Live & Show 2018
Self / Kamen Rider Cross-Z (voice)
2018

Kamen Rider Build: Birth! Bear Televi!! VS Kamen Rider Grease!
Ryuga Banjo / Kamen Rider Cross-Z
2018

My Long Awaited Love Story
2017

Kamen Rider Heisei Generations FINAL: Build & Ex-Aid with Legend Riders
Ryuuga Banjou / Kamen Rider Cross-Z
2017

Kamen Rider Build
Ryuga Banjo / Kamen Rider Cross-Z · (49 episodes)
2017

Kamen Rider Build: Transformation Lessons ~The Laws Of Transformation Are Set!~
Ryuga Banjo / Kamen Rider Cross-Z · (1 episode)
2017

Closest Love to Heaven
Schoolmate
2017

Tokyo Girl
Kohei · (2 episodes)
2016

Cold Case ~Shinjitsu no Tobira~
(1 episode)
2016

Amazon Riders
Hiroki Nagase · (13 episodes)
2016

Commuting to School Series On the Way to School
2015

Kamen Rider
Ryuga Banjou / Kamen Rider Cross-Z · (49 episodes)
1971

Kamen Rider
Ryuga Banjo / Kamen Rider Cross-Z · (2 episodes)
1971