Participated · Seed · May 2026

Graphenory conducts research, development, manufacturing, and sales of optical devices that utilize graphene, drawing on foundational research by Professor Hideyuki Maki of Keio University. Its technology aims to realize graphene optical devices that can operate on semiconductors. The company is developing products including infrared light sources, analytical sensing devices, and optoelectronic fusion devices. Reported target application areas include the semiconductor industry, information and communication, data centers, AI-related fields, quantum technology, and biomedical sectors. Graphenory completed the Keio University Startup Incubation Program (KSIP) and was founded on October 1, 2024. Following its seed A5240 million raise, the company plans to use the proceeds to accelerate hiring and advance technology development as it pursues practical applications and broader market expansion.

Led · Series B · Nov 2025

SecureNavi digitizes the traditionally manual “humanities security” tasks such as ISMS certification, P-Mark acquisition, regulation compliance, policy development, audits, and inspections. Its core offerings include a service suite that simplifies obtaining and operating information-security certifications for more than 1,200 corporate customers, as well as the Fit&Gap platform that automates security regulation compliance. The company recently unveiled “Takumi Cloud for the Second Line,” a platform designed around the international Three Lines Model to help second-line governance teams standardize and automate risk assessments across contractors, systems, and group companies. Preliminary trials of Takumi Cloud span industries like pharmaceuticals, telecom, finance, manufacturing, IT, distribution, food service, and HR. SecureNavi reports that revenue has climbed roughly 3.5× since its previous funding round, indicating rapid commercial traction. The firm plans to invest heavily in product development, expand its engineering team, step up recruiting, and increase marketing spend to accelerate digital transformation in security compliance.

Led · Series A · Nov 2025

StartPass delivers a "startup management planning office" platform that externalizes and automates the growth-planning function for founders. Its flagship subscription service, Keiei Kasoku Cloud, starts at ¥10,000 per month and has been adopted by more than 1,000 startups since its 2022 launch. Complementary offerings include Growth-Pass, through which 44 % of users seeking funding received investment commitments within three months, and CxO-Pass, a talent marketplace listing over 500 executive candidates. The system integrates accounting data via partners such as freee and connects startups with a 200-plus network of investors and specialists to streamline fundraising, hiring, and strategic planning. By 2025, companies using StartPass represented about 7 % of all Japanese startups that raised capital, underscoring its growing footprint. The firm is now expanding this data-driven infrastructure under the rebranded banner "スタートアップ経営企画室 StartPass" to strengthen Japan’s startup ecosystem.

Participated · Series A · Sep 2024

Recustomer provides a post-purchase experience platform that automates returns, exchanges, cancellations, delivery tracking, and offers a try-on-at-home service to improve e-commerce customer experiences. In roughly two and a half years of operation the service has been introduced to over 200 brands across industries including beverages, food, fashion, interior design, and electronics. The company says it is used by many enterprise customers and has an overwhelming presence in Japan in the post-purchase experience software category. With the new funding Recustomer plans to expand product functionality, strengthen its engineering organization, and bolster sales, marketing, and customer success teams. The company also plans to expand its scope toward pre-purchase experiences to become the market leader among purchase experience platforms. Recustomer was established in March 2017 and is headquartered in Chiyoda-ku, Tokyo.

Participated · Series A · Aug 2024

KatagrMa (カタグルマ), founded in January 2021, develops a vertical SaaS platform for operators in the childcare, education, and therapy sectors to address facility operations, organizational, and HR challenges. The company reports 9.5x growth in MRR and 9.8x user growth since its prior seed round announced in September 2021. KatagrMa plans to use the new funding to build new products and to strengthen engineering resources for product enhancements. It will also expand marketing and sales efforts to increase new users and broaden its target areas, and bolster customer-success capabilities to improve follow-up and user loyalty. The fundraising and product plans target industry pain points including staffing shortages and service-quality decline amid rising facility demand. Regulatory changes—stricter childcare staffing standards from fiscal 2024 and the 2026 'universal childcare' policy—are expected to deepen the sector's staffing challenges, which KatagrMa aims to address.