Do we like Taro Yamamoto?
Our score: 7 out of 10. Nothing harmful in his own words turned up and he has real runs on the board, but the speeding case and the Diet stunts cost him points.
Yamamoto came to politics from the screen. He was an actor, best known as Shogo in the cult film Battle Royale, and a TV personality who talked current affairs on late-night shows. The 2011 Fukushima meltdown turned him into an anti-nuclear activist, and he won an upper house seat in 2013 with the backing of several minor parties.
His most famous stunt came in 2013, when he handed a letter to Emperor Akihito describing the health conditions of children near the stricken plant. Mainstream politicians slammed him for it, which tells you how he works: he picks the fight and wears the heat. In 2019 he left the Freedom Party and founded Reiwa Shinsengumi, a left-populist outfit that Semafor calls anti-establishment.
On the harm test, the record is clean as far as we could find. His platform is scrapping the consumption tax, a 1,500 yen minimum wage, ending nuclear power and opposing the Henoko base in Okinawa. Semafor reported that his party has drawn support from anti-vaccine and science-sceptic groups, but we found no words of his own pushing that. We also found nothing from him on LGBTQ+ issues either way, so that is a gap, not a tick.
The best thing he's done is open the door. After the 2019 election his party gave its two seats to candidates with severe disabilities, and he said they were already making the chamber barrier free. Semafor also reports that he tried to physically block an anti-immigration law in parliament. Fans call that standing up for migrants; critics call it a stunt, and where you land depends on which you see.
The recent saga is less heroic. The party said he was recorded at 149 km/h in a rental car on an 80 km/h expressway in October 2025. He received a summary order for a 90,000 yen fine and a 90-day licence suspension, and the news came out in July 2026. He called it “inexcusable” and said he was quitting the leadership and politics, and the party planned a rename and a leadership vote on 31 July.
In January 2026 he had already resigned from the upper house, saying he would step back for an indefinite period. His own words then were “I aim to return”, which makes the July exit a sharp turn. So the story is a politician who fought on behalf of people with little power, then tripped over his own right foot.