SPARKLE LEGAL was established in April 2021. We are committed to delivering value to our clients and providing exceptional service that meets the demands of today’s rapidly changing world. The founder, Kakuji Mitani, has extensive experience as partner at a leading law firm in Japan, representing a number of Japanese and multi-national companies. As a team, we provide the highest quality advice our clients need to overcome challenges and discover opportunities.

SPARKLE LEGAL is intensely focused on understanding our clients’ business environment and building trust. Our clients are at the heart of everything we do. We work in collaboration and partnership with our clients to devise solutions that deliver the best results. Our clients always come first, and we strive to be the most approachable and reliable. Now more than ever, the importance of corporate social responsibilities is growing. Corporate governance, compliance, and stakeholder engagement are increasingly critical for companies. SPARKLE LEGAL is committed to our clients’ best interests while at the same time aims to be a socially responsible firm that serves the public and follows the legal profession as a noble calling.

SPARKLE LEGAL handles some of the most complex and demanding transactions in the fields of corporate law, mergers and acquisitions, antitrust, trading etc., leveraging our formidable knowledge and sophisticated expertise. Our vision is to be the most trustable global law firm in Japan. Innovation is at the heart of the firm’s strategy, and we are committed to pursuing excellence.


  • Corporate

    Corporate / Commercial Transactions

    Corporate Governance

    Compliance & Corporate Crisis Management

    Shareholders’ Meetings

    Takeover Defense & Shareholder Activism

  • Mergers and Acquisitions

    M&A & Business Restructuring

    Due Diligence

    Business Succession Planning

    Reorganization & Insolvency

  • Competition & Antitrust

    Japanese Competition Law

    Japanese Subcontract Act et al.

    Overseas Competition & Antitrust

  • Dispute Resolution

    Corporate Disputes

    General Commercial Disputes

    International Dispute Resolution

  • Other Practice Areas


    Personal Data & Privacy

    Labor Disputes

    White Collar Crime


SPARKLE LEGAL supports business activities through a full spectrum of services, including advice on various commercial contracts, internal regulations, management of shareholders’ meetings, corporate governance, regulatory compliance, risk management, and dispute resolutions. We offer practical and business-focused solutions to Japanese and multi-national companies across all sectors. In particular, we have extensive experience in shareholders’ meetings from prior arrangements to hostile takeover defense and shareholder activism defense such as proxy fights.

Mergers and Acquisitions

SPARKLE LEGAL supports clients throughout their merger and acquisition process by providing efficient and pragmatic advice on deal structuring, legal due diligence, various transactional agreements, closing procedures, and dispute resolutions. We also advise clients on intragroup restructuring to minimize costs and enhance corporate value. For businesses in financial distress, we devise creative solutions by considering every option including divestitures of businesses, reorganization (in court and out of court), and bankruptcy procedures.

Competition & Antitrust

SPARKLE LEGAL supports clients navigate antitrust regulations including monopolization, repression of free trade, and abuse of dominance. We provide advice tailored to the clients’ businesses. Our services include advice on merger control, governmental and internal investigations on cartels/anti-competitive agreements, and regulations under Japanese special laws (e.g. Subcontract Act, Act against Unjustifiable Premiums and Misleading Representations). We also support our clients to prevent antitrust infringements through development and implementation of sophisticated compliance programs and in-house workshops.

Dispute Resolution

SPARKLE LEGAL has extensive experience across all areas of dispute resolutions including a wide variety of general commercial disputes (e.g. contractual disputes, real-estate disputes, actions for contractual or tortious damages), corporate disputes (e.g. corporate governance disputes, shareholder derivative suits, revocation of shareholders’ resolutions etc.), and labor disputes. We partner with our clients to devise prompt and cost-effective strategy that delivers the best results. We also advise on cross-border disputes, leveraging our expertise in international litigation and arbitration.



We aspire to be a firm that attracts sparkling talents, hence the name SPARKLE LEGAL. Our lawyers with sparkling eyes and sophisticated expertise are committed to providing exceptional service to our clients. The name was inspired by the sparkling holiday illuminations that lit up WATERRAS, where SPARKLE LEGAL established its first office.



Kishimoto Building 10F

2-2-1 Marunouchi, Chiyoda-ku

Tokyo 100-0005, Japan