Kiraboshi Capital
3-10-43 Minami-aoyama, Tokyo, Minato-ku, 107-0062, Japan
Overview
Kiraboshi Capital contributes to the development of Tokyo metropolitan by demonstrating equity functions and customers' management needs. The firm was established in September 2018 and is based in Minato-ku, Tokyo, Japan.
- Total investments
- 4
- Lead investments
- 0
- Investments · 12mo
- 2
- Active investors
- 0
Sector focus
- Finance
- Financial Services
- Venture Capital
Investment portfolio
- Gaianixx
Participated · Series C · Mar 2026
Gaianixx is a University of Tokyo spin-out engaged in the research, development, manufacturing and sale of a proprietary interlayer that is inserted between a substrate and semiconductor film to relax lattice mismatch and yield high-quality single-crystal compound semiconductors. Its technology targets applications ranging from power semiconductors and LEDs to next-generation sensors and communication devices. Since its Series B round, the company has progressed from pure R&D into commercialization; two partner companies have already shifted to device development using Gaianixx materials, and roughly 40 domestic and international device makers are in active joint-development or evaluation discussions. The firm operates a Yamanashi Technical Center and is building a dedicated pilot production line. Gaianixx holds 12 granted patents with a further 87 filings in process. Cumulative funding now totals about ¥3.85 billion, which supports global expansion across North America, Europe and Asia as well as key hiring.
- CaTe
Participated · Series B · Aug 2025
CaTe is a Japanese medical-device startup building a remote cardiac rehabilitation system designed to let heart-disease patients perform clinically validated rehab programs from home. By addressing the low participation rates of conventional, hospital-based cardiac rehab, the company aims to cut mortality and readmission rates for the country’s second-leading cause of death. CaTe holds a second-class medical-device manufacturing and sales license and is moving quickly toward full social implementation of its technology. The firm will apply newly raised capital to accelerate R&D and the regulatory path for its cardiac rehab equipment. Since its 2020 founding, CaTe has accumulated ¥2.35 billion in equity financing and received ¥0.19 billion in research grants, giving it ¥2.54 billion in total funding available for product development. Management espouses the vision of creating a society in which “Exercise is Medicine” and plans to sustain rapid growth to achieve this goal.
- SUPER STUDIO
Participated · Equity · May 2025
SUPER STUDIO offers ecforce, an integrated commerce platform that provides a suite of tools including a customer data platform (ecforce cdp), business intelligence dashboards (ecforce bi), and marketing automation (ecforce ma). The platform supplies a unified infrastructure for online and offline sales channels to help merchants scale and execute digital transformation (DX). Led by CEO Kosuke Hayashi and headquartered in Meguro-ku, Tokyo, the company targets customers from SMBs to enterprise clients. The company plans to use the new funding to enhance product development, accelerate hiring, and expand sales and marketing efforts focused on enterprise clients. Financially, this raise is part of the company’s equity financing history, with total equity funding now around ¥10.1 billion. No operating metrics (revenue/users) were disclosed in the article. SUPER STUDIO builds and provides the integrated commerce platform ecforce, aiming to optimize marketing, supply chain, and customer experience across online and offline channels. The company also operates D2C brands and feeds operational learnings back into product development to improve its platform. In 2023 it launched ecforce ma (an EC-focused marketing automation tool), opened its first physical next‑generation shop THE [ ] STORE, and is rolling out ecforce check, a next‑generation store reservation and customer management system. SUPER STUDIO says it will continue releasing multiple products to realize its "next‑generation EC" vision and extend ecforce into offline markets. The company emphasizes data integration across channels to help businesses of all kinds optimize their products and services. Financially, it disclosed an additional financing announced in October 2023 that contributes to its ability to invest in product development, consulting, and hiring.
- Sumutasu
Participated · Series B · Apr 2022
Sumutasu (株式会社すむたす) operates an iBuyer service focused on condominium resale, using AI appraisal to reveal a sale price in as little as one hour. The service lets homeowners sell at their preferred timing, simplifying the sales process and reducing psychological and time-related stress. Sumutasu runs a real estate purchase-and-resale business (不動産買取再販業) and positions its product as a new, streamlined condominium sale experience. The company highlights an emphasis on customer experience and leveraging deep operational knowledge to support its service. Sumutasu was founded in January 2018 and is headquartered in Nihonbashi, Chuo-ku, Tokyo. The company is led by representative 角 高広. The article does not disclose revenue or other operating metrics. Sumutasu operates a direct online real estate purchase service using an iBuyer model: it buys houses from homeowners, renovates them at scale, and resells them. The company says its platform can provide a fair house valuation in an hour and it does not charge seller commissions or processing fees. Sumutasu has purchased approximately 100 properties, currently lists about 30 properties, and partners with more than 20 banks and remodeling companies; the team totals 30 people. With the latest funding, the company plans to buy more houses, launch a mortgage brokering service next year, expand into Osaka and Nagoya, increase sales five-fold compared to 2021, and grow its headcount. Financially, Sumutasu secured $8.2M in equity and $1.6M in debt in the most recent financing and has raised $16M in total since its 2018 inception.
Team
No current team members are available.