Taro Yamamoto

In October 2025, Yamamoto was recorded travelling at 149 km/h on a motorway with an 80 km/h limit. In 2026, he received a 90,000-yen fine and a 90-day driving licence suspension; Reiwa issued a severe warning. In July 2026, he apologised, announced his resignation as party leader and his withdrawal from national politics.

State of the evidence

Offence acknowledged and sanctioned

Legal status — source text

Criminal fine of 90,000 yen through summary proceedings; administrative driving licence suspension for 90 days

Attribution

Direct personal responsibility

During the 2025 Upper House election campaign, Yamamoto appeared in a video supporting a Reiwa candidate, wearing an outfit and appearing in a scene strongly reminiscent of Quattro Bajeena from the Gundam franchise. Bandai Namco Filmworks/Sunrise subsequently issued a statement saying that electoral use of costumes and scenes evocative of Gundam had not been authorised and that it did not support any candidate.

State of the evidence

Visual use documented and lack of authorisation expressly stated by the intellectual property holder

Legal status — source text

No judicial finding of an offence identified

Attribution

Personal responsibility for the campaign presentation; company not politically involved

A few days after the Noto Peninsula earthquake, Yamamoto visited the disaster area despite requests from the authorities and major parties to limit non-essential travel so as not to hinder relief operations. A photograph and his own posts mentioning that he had eaten curry prepared on site sparked controversy over the use of resources intended for disaster victims.

State of the evidence

Visit and controversy documented

Legal status — source text

No legal proceedings

Attribution

Personal responsibility for his decision to travel and his communications

During an Upper House committee hearing on immigration reform, Yamamoto physically attempted to rush towards the chair to prevent the vote. Two LDP lawmakers sustained minor injuries in the scuffle, and several parties submitted a disciplinary motion.

State of the evidence

Physical incident and disciplinary motion documented

Legal status — source text

No final parliamentary sanction; the motion was not pursued after his expression of regret.

Attribution

Direct personal responsibility for the act

Role of the person profiled

Protagonist not prosecuted

In the years following Fukushima, Yamamoto made several highly alarmist statements about radiation exposure. In 2013, he told a camera that a meal served to parliamentarians was probably "bekureteru", slang suggesting radioactive contamination. The comments were accused of fuelling stigma and reputational damage affecting Fukushima.

State of the evidence

Statements documented, followed by apologies for lack of consideration

Legal status — source text

No legal proceedings

Attribution

Direct personal responsibility for his statements

During an imperial reception, Yamamoto handed Emperor Akihito a letter concerning the health consequences of Fukushima. Many officials denounced the gesture as an attempt to involve the Emperor in political debate. The Upper House severely reprimanded him and barred him from imperial events.

State of the evidence

Incident and parliamentary sanction documented

Legal status — source text

Non-criminal reprimand; exclusion from imperial events for the remainder of his term

Attribution

Direct personal responsibility

During a protest against restarting the Genkai nuclear power plant, Yamamoto and other demonstrators entered the Saga Prefectural Government building despite objections from officials. Complaints alleging trespass and forcible obstruction were filed, and Yamamoto was questioned.

State of the evidence

Complaints and questioning documented, followed by closure

Legal status — source text

Case closed without prosecution due to insufficient suspicion and lack of proof of criminal intent

Attribution

Yamamoto was the subject of complaints; no guilt was established