About Us

Time Machine Underwriters is the first Managing General Agency (MGA) specialized in Warranty & Indemnity insurance in Japan.

Team

KOSUKE
INADA

稲田行祐

Kosuke Inada

CEO / Attorney at Law

Kosuke Inada is the founder and CEO of Time Machine Underwriters. Kosuke previously worked at Rakuten General Insurance as a senior executive officer in charge of CEO office and a chief underwriter of Warranty & Indemnity insurance, as well as Rakuten Insurance Holdings as an executive officer in charge of M&A. Prior to those positions, Kosuke was a partner at Chuo Sogo Law Office, where he advised clients on a wide range of corporate matters, including insurance, reinsurance, litigation and M&A. Kosuke also has experience in working as a deputy director at Insurance Dept of the Financial Services Agency of the Japanese Government. Kosuke is an external statutory auditor of Nanairo Life Insurance Co., Ltd. (2021-) and NTT DOCOMO General Insurance, Inc. (2024-). Kosuke holds a B.Ec from Waseda University and a LL.M from University of Southern California Gould School of Law. Kosuke wrote many books including “Practice of W&I Insurance” which is the first book on W&I insurance in Japan.

TOSHIFUMI
KAJIWARA

梶原俊史

Toshifumi Kajiwara

CUO / Attorney at Law (admitted in Japan and New York)

Toshifumi Kajiwara is the Chief Underwriting Officer of Time Machine Underwriters. Toshifumi previously worked at LINE Corporation as the head of legal & compliance department and the data protection officer as well as LINE Healthcare Corporation as a director. Prior to those positions, Toshifumi was an attorney at Clifford Chance Law Office, where he advised clients on a wide range of corporate matters, including M&A, capital markets, banking and derivative transactions, financial regulatory advice and litigation. Toshifumi holds a LL.B from Kyoto University, a J.D from Kyoto University Law School and a LL.M from University of Southern California Gould School of Law.

KOTA
SORIMACHI

反町公太

Kota Sorimachi

Underwriter / Certified Public Accountant

Kota Sorimachi is an underwriter of Time Machine Underwriters. Kota previously worked at Ernst & Young (EY), where he advised clients on a wide range of corporate accounting matters. Prior to that position, Kota worked at Mitsubishi Corporation and Frontier Management as a M&A and business turnaround adviser. Kota holds a B.Ec from University of Tokyo.

MINORI
OYAMA

大山みのり

Minori Oyama

Underwriter / Certified Public Accountant

Minori Ohyama is an underwriter of Time Machine Underwriters. Minori previously worked at the deals section of Pricewaterhouse Coopers Co., Ltd. (PwC) as an adviser of the M&A integration support and the financial due diligence. Prior to that position, Minori worked at Chuo Aoyama Pricewaterhouse Coopers, where she advised clients on a wide range of accounting matters, including the financial audit and the GAAP conversion. Minori holds a BA in international politics, economics and business from Aoyama Gakuin University and an MBA from University of Oxford Saïd Business School.

TAKUYA
MIYAZAWA

Takuya Miyazawa

Takuya Miyazawa

Underwriter

Takuya Miyazawa is an underwriter of Time Machine Underwriters. Takuya previously worked at Tokio Marine & Nichido Fire Insurance as a senior underwriter specializing in Financial Lines and Warranty & Indemnity insurance. Takuya holds a BEng from Keio University.

COMPANY INFORMATION

  • Company Name

    Time Machine Underwriters Inc.

  • Address

    THE MODULE roppongi 312, Roppongi 7-21-24, Minato-ku, Tokyo 106-0032 (Access Map

  • Representative Director

    Kosuke Inada

  • Business
    History

    We provide underwriting services on behalf of Mitsui Sumitomo Insurance Company as a MGA since 2021. Prior to that, we provided consulting services on product development and underwriting of Warranty & Indemnity insurance for Tokio Marine & Nichido Fire Insurance, Mitsui Sumitomo Insurance and Sompo Japan Insurance since our foundation in 2019.