Key Facts
• Sanseito gained 14 seats in the 2025 election, ranking third in public support.
• Leader Sohei Kamiya, 47, faced criticism for controversial remarks and conspiracy theories.
• Former secretary A, in her 50s, died by suicide in December 2023, three months after resigning.
• Allegations suggest Kamiya’s power harassment contributed to A’s mental distress.
• B, a former secretary in her 20s, publicly accused Kamiya of abusive behavior on YouTube.
• B claimed Kamiya pressured A over poor event attendance, causing visible distress.
• Sanseito filed a lawsuit against B, seeking $300,000 for alleged data leaks.
• B denied possessing or leaking recordings, questioning the lawsuit’s intent.
• Sanseito denied claims linking Kamiya’s actions to A’s suicide.
• Kamiya also faces separate allegations of sexual harassment by former staff.
Summary
Sanseito, a rising political party in Japan, has been embroiled in controversy following the suicide of a former female secretary, A, in late 2023. Allegations suggest that leader Sohei Kamiya’s power harassment contributed to her death. B, another former secretary, publicly accused Kamiya of abusive behavior, claiming A was visibly distressed due to his pressure over event performance. Sanseito responded by suing B for $300,000, alleging data leaks, which B denies. The party has rejected claims linking Kamiya’s actions to A’s suicide. Additionally, Kamiya faces separate sexual harassment allegations. These incidents highlight internal tensions and leadership controversies within Sanseito.
