Strategic Multi-Family Office & Advisory

Precision in Complexity.

Institutional-grade intelligence for private interests. Capital K provides analytical rigor with the bespoke, confidential service of a private office.

About

A boutique private office, built for clarity.

Capital K合同会社 is a boutique strategic advisory firm structured as a Goudou Gaisha. We act as a specialized vehicle for high-level consulting, asset intelligence, and private investment for high-net-worth individuals and business owners.

High-net-worth families and founders often hold fragmented assets across geographies and asset classes — without a single, data-driven source of truth. We provide that clarity, and the operational discipline to act on it.

Our work is positioned as an "Adviser to the Advisers" — a technical partner to tax, legal, and family office teams that lack in-house modeling and visualization expertise.

Services

Three pillars of advisory.

We bring the analytical rigor of a corporate finance firm to the bespoke, confidential context of a private office.

I

Asset Intelligence

Financial portfolio visualization and commercial investment strategy. We transform fragmented financial data into a cohesive visual command center, enabling informed capital allocation without the bias of product-pushing.

  • Multi-asset portfolio visualization
  • Commercial investment strategy
  • Wealth & legacy operational support
II

Strategic Advisory & Incubation

A high-level extension of your leadership team. From operational workflow design to incubating new ventures and navigating cross-border tax and regulatory landscapes, we provide the technical roadmap for growth.

  • Business efficiency & operations
  • New venture incubation
  • Cross-border consulting
III

Legacy & Next-Gen Strategy

Long-term success across generations. We advise on family governance structures and design tailored international education pathways to prepare the next generation for the responsibilities of leadership and wealth.

  • Family governance design
  • International education pathways
  • Direct investment & real estate (Tokyo)

Contact

Make an inquiry.

For new client inquiries, advisory engagements, or partnership discussions. All correspondence is treated confidentially.

By submitting, you agree to be contacted at the email address provided.

Or contact us directly at kohei.akiyama@capitalk.jp.