Education

• 2002　Bachelor of Laws, Faculty of Law, Gakushuin　University
• 2006–2009　Meiji University Law School

Professional Experience

• Dec.2010–Jan.2019　
  Member, Shimizu Tadashi Law Office
• Jul.2012–Present　
  Auditor, Bunka Suginami Gakuen Educational Corporation, Tokyo
• Jul.2012–Sep.2025　
  Auditor, Bunka Nagano Gakuen Educational Corporation, Nagano
• Jun.2013–Jun.2019　
  Director, Eishin Welfare Association Social Welfare Corporation, Yamanashi
• Mar.2015–Jun.2024　
  Auditor, Jiu-kai Social Welfare Corporation, Kumamoto
• Dec.2016–Present　
  Member, Ethics and Legal Affairs Committee, United World Wrestling
• Apr.2017–Present　
  Auditor, Tsunoda Gakuen Educational Corporation, Chiba & Saitama
• Feb.2019–Present　
  MASS Partners Law Firm
• Jun.2019–Present　
  Director, Eishinkai Medical Corporation, Yamanashi
• Jun.2019–Aug.2021　
  Outside Director, Fujiko Co., Ltd., Hyogo
• Oct.2020–Present　
  Certified as a Management Innovation Support Organization by the Small and Medium Enterprise Agency
• Jun.2021–Jun.2025　
  Councilor, Japan Wrestling Federation
• Jun.2023–Present　
  Councilor, Hayashi Rheology Memorial Foundation

※ An attorney sharing the same name as our firm partner, Osamu Shimizu, received a disciplinary action in 2017; however, that individual is entirely unrelated to our attorney. Our attorney, Osamu Shimizu, has never been subject to any disciplinary action by the bar association. We kindly ask that there be no misunderstanding.

Representative Matters

• Tokyo Bar Association Insolvency Law Section, et al. (eds.), Practice of Business Revitalization Finance, Kinzai, 2022　
　　　　　　　　　　　　　
• Tokyo Bar Association Insolvency Law Section (ed.), Manual for Filing for Bankruptcy [3rd ed.], Shoji Homu, 2025　
• Toshiaki Tabata, Masanori Kimura, Osamu Shimizu and Taishi Taketomo, “Practical Considerations and Recent Trends in Legal Proceedings,” in Special Feature: New Trends in Business Revitalization and Insolvency Cases and Practical Responses, Horitsu no Hiroba [Law Forum], Vol. 79, No. 4, Gyosei, 2026