Participated · Series B · Nov 2025

Founded in 2020, Opt Fit provides the gym-focused AI surveillance service “GYM DX,” which analyzes security camera footage to deliver usage analytics, crowding alerts and unauthorized entry detection. GYM DX has been deployed in more than 2,000 facilities—double the figure at the company’s Series A—and posts a continuation rate exceeding 99.9%. Building on this traction, the company is rolling out “Kaigo DX,” a privacy-aware monitoring camera for caregiving facilities, with trial installations starting January 2025 and broader AI feature releases slated for November of the same year. Opt Fit’s proprietary indoor-person detection technology, extensive training data and streamlined AI pipeline enable fast, cost-efficient product launches across new domains. The 36-person team plans to deepen alliances with operators seeking unmanned or labor-saving facility management and will hire 15 additional employees to support rapid growth. Over the mid- to long-term, Opt Fit aims to apply its camera-based AI to a wide range of industries, establishing infrastructure that reduces dependence on human labor.

Led · Equity · Oct 2024

Thinkfree has launched Refinder AI, an enterprise AI search and assistant that consolidates scattered data across business platforms into a single searchable interface. Refinder AI connects with over 30 productivity and collaboration platforms, including Gmail, Google Workspace, Slack, Notion and Jira, and searches contents, documents, PDFs, emails, and messages. The product delivers fast, accurate answers based on verified organizational data and prioritizes results by relevance and importance to speed decision-making. It integrates via a data connector, removing the need for additional development work and supporting SaaS, on-premise, and BYOC deployment options. Granular access controls restrict responses to data each user is authorized to see, addressing security concerns. Since its beta launch the product received positive market feedback and the company subsequently secured outside investment.

Participated · Equity · May 2024

OPENREC.tv is a live streaming and game-event community platform that offers live broadcasts, original content, and event programming. The platform serves more than 10 million users worldwide. It runs large offline events such as the second “配信者ハイパーゲーム大会,” which featured 100+ streamers, ~40,000 attendees, and a peak concurrent connection of about 300,000. OPENREC is also developing original IP and creator-branded products, including the apparel label “with mellow,” with some items selling out immediately. Following the raise, the company plans to strengthen offline events, accelerate IP creation, produce original programs, improve user experience, and expand hiring and operations. Financially, it completed approximately ¥2.4 billion of funding through a third‑party allotment and bank borrowings.

Participated · Equity · Mar 2024

Yondemy operates "Yondemy," a subscription web-app that combines an AI tutor, gamified lessons and personalized book recommendations to get children reading regularly. The company also runs a parent-facing LINE consultation service, a podcast and a free parent community to deepen at-home reading practices. Founded in April 2020 and headquartered in Tokyo, Yondemy reports that students who remain enrolled for three months read on average more than five books per week. The team is small (3 executives/employees, 29 student interns and 2 part-time contributors) and is recruiting BizDev, engineers, designers and senior operators to scale. Yondemy plans to strengthen UX, develop essay/ composition up-sell features, build new products and expand alliances—particularly with publishers—to broaden family touchpoints.

Participated · Seed · Feb 2023

Mawari develops interactive real-time 3D rendering and XR streaming technology centered on the Mawari Engine, a patent-pending 3D Streaming CODEC and split-rendering architecture. The company is building the Mawari Network, a decentralized XR content delivery platform powered by a distributed network of GPU nodes to enable delivery at scale. Mawari plans to expand its R&D team and accelerate the public launch of the Mawari Network. Financially, the company closed an oversubscribed $6.5 million seed round to fund those efforts; it had been self-funded/bootstrapped since founding in 2017. Mawari reports over 40 deployments worldwide and lists customers and partners including 8th Wall, BMW, Ericsson, KDDI, Immersal, Niantic, Qualcomm, Sapporo Breweries and T-Mobile. The company is presented in the article as based in San Jose, California.