Seiya Mitsuhashi
Seiya Mitsuhashi — known online as DirtMan — is a Sapporo-based driver competing in both Dirt Trial and Rally. Racing on the snow and gravel stages that define Hokkaido competition, he represents the kind of grassroots talent that rarely gets the spotlight it deserves. As CEO of DM11 Holdings, he is also building the platform designed to change that — connecting Japanese grassroots motorsport directly to global fans and sponsors. Career highlights: 2023 Hokkaido Regional Dirt Trial — 2 consecutive wins; 2026 Hokkaido Winter Regional Rally Championship — consecutive wins; 2026 All-Japan Dirt Trial Championship debut — 4th place (official award).
Rally+
Dirt Trial+
Rally+VIDEO
▶ Promotional Video
Results
Dirt Trial
Rally
Rally is on hold for now — there is no rally car available at the moment. Dirt trial continues.
Machines

Daihatsu Mira
Where it all started. A kei car 4WD that taught me to attack snow roads with nothing but commitment. No power, no grip — just the will to finish.

Daihatsu Storia
The Storia that carried me through both Dirt Trial and Rally. Multiple Dirt Trial victories in 2023, podiums on gravel and snow in rally. Every kilometre in that small body is the foundation of everything I know.

Honda Civic EK9
A new chapter, made possible with support from ROUTE6. FF NA Civic — finding the limit with every run. The setup work is still ongoing, and so is the story.

Subaru Impreza GDB N12
The Impreza I always wanted, made real through NGO FACTORY. 4WD turbo traction on a different level. Won the 2026 season opener straight out of the gate.
Driver Story
Why Motorsport
For as long as I can remember, cars were the only thing I was interested in. When I was three, an acquaintance gave me an electric Skyline GT-R, and without anyone showing me how, I was backing it up with the right counter-steering and turning it round in a small room without hitting anything. When I was in kindergarten, my mother bought me Gran Turismo 4 for the PS2, and I got hooked on the gravel and snow courses. Watching the anime Initial D over and over, I began to hope that one day I could drive like that too. Around then, I came across a WRC DVD at a video rental shop. The sight of rally cars charging across rough roads stunned me, and a dream was born: "One day I want to compete in the WRC." In fifth or sixth grade, my uncle, a ten-time consecutive All-Japan Dirt Trial champion, took me to a dirt trial event. I still cannot forget the fierce G-forces I felt in the passenger seat of an Impreza and a Lancer Evolution X. At that moment I made up my mind: "I want to do dirt trial too." In junior high and high school, though, I had no friends who liked cars, and I was sometimes laughed at when I talked about them, so I kept pretending that I had no interest in cars. In high school I got into beauty and styled my hair with a hair iron every day. After graduating I was encouraged to become a hairdresser and even went to a trial day at a vocational school, but the thought of motorsport was always somewhere in my mind. After agonising over it for a long time, I went to neither university nor vocational school; I dropped the pretence and chose to work for my uncle. In 2019, my uncle took me back into the world of dirt trial, and when I felt that atmosphere again from the passenger seat, my mind was made up. I made my debut in a winter rally in the Daihatsu Mira 4WD I drove every day, and the following year I bought a Daihatsu Storia 1.3L FF. That is when my dirt trial life really began.
Goals & Vision
Right now I have many goals. As a driver, my biggest goal is to win in the All-Japan Dirt Trial Championship. I cannot yet say I have fully mastered either the EK9 or the Impreza. I will keep putting in the practice until the car and I become completely one. On the mental side, at moments when I am just one step away, my emotions sometimes run too high. My challenge is to reach, reliably, a kind of focus that is relaxed yet deep: enjoying myself while letting no one get near. On the business side, I want to make this platform much bigger. I want rally and dirt trial to become sports loved by people all over the world, like football and basketball. I want both athletes and people who are not athletes to find dreams and new paths through this site. And I want to go out into the world myself, as a driver and as an entrepreneur. I started this business so that one day I can race on stages abroad. I will keep racing, to raise the value of what DirtMan is and so that people around the world find it interesting.
Discipline Info


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