Led · Series B · Apr 2026

Magic Shields develops solutions aimed at preventing falls and fractures among older adults, promoted under the name "ころやわ." The company is headquartered in Hamamatsu, Shizuoka and is led by CEO Akiji Shimomura. In the announced financing, Magic Shields raised additional equity and debt capital, indicating an effort to scale or sustain operations. The latest funding comprises ¥1.03 billion in equity and ¥250 million in bank loans, totaling ¥1.28 billion in new capital. The company named WPower Fund and JIC Venture Growth Investments as lead/co-lead investors in the equity round. The announcement does not disclose revenue, user metrics, or detailed use of proceeds beyond describing the money as additional funds.

Participated · Seed · Mar 2026

Boost Health develops and operates BOOST, a talent-success offering that pairs an AI tool—built on psychological science such as cognitive behavioral therapy—with monthly interventions from specialized coaches. The platform delivers continuous, individualized support intended to secure reproducible performance improvements and deeper behavioral change beyond traditional training and surveys. The company reports measurable impacts in client pilots: average productivity up 8 points after three months, stress improvements for 71% of high-stress users, a 13% engagement increase in an example case, and a 47% condition-score improvement for transferred employees at Dentsu. Boost Health is reinforcing its proprietary data foundation by integrating behavioral logs, stress metrics, and productivity indicators to quantify the ROI of human-capital investments. Planned uses of capital include advancing the AI product, strengthening the data platform, and scaling enterprise implementation and support. Founded in May 2022 and headquartered in Tokyo, the company is pursuing broader enterprise adoption, including a planned large-scale test at Hitachi in 2026.

Participated · Series A · Feb 2026

Founded in May 2023 and headquartered in Misawa, Aomori Prefecture, MiRESSO is building a beryllium manufacturing and sales business based on an innovative low-temperature purification process originally spun out of QST research. The company targets the critical need for a stable domestic supply of beryllium, an essential neutron-multiplying material for commercial fusion reactors, while also offering its purification method as a technology platform for recycling and refining a wider range of mineral resources. MiRESSO is constructing the BETA (Beryllium Testing plant in Aomori) pilot plant on Pacific Metals’ site in Hachinohe, aiming to begin production during fiscal 2027. Over roughly three years since inception, the startup has raised about ¥4.48 billion in equity and approximately ¥6.68 billion when government grants are included. Funds from the latest round will accelerate pilot-plant build-out, secure raw-material supply, and enhance product quality to establish a new beryllium supply chain in Japan.

Participated · Series A · Dec 2025

MamaWell, founded in 2022, has built a digital health platform that supports women during pregnancy through personalized, evidence-based care. Using wearable devices, the service collects vital data such as heart rate and activity levels and blends it with 24/7 chat and online consultations from a network of personal midwives. The B2B-focused model has been adopted by more than 140 corporations, health-insurance associations and municipalities across Japan, including over 100 companies seeking to help employees stay in the workforce through pregnancy. By filling the gap between conventional medical care and workplace accommodations, the service is positioning itself as new social infrastructure. The company plans to expand corporate roll-outs, deepen alliances with local governments and hospitals, and grow its midwife network. Proceeds from the latest round will also strengthen product development so the platform can deliver seamless support from pregnancy through postpartum. Ultimately, MamaWell aims to make comprehensive maternal support an everyday standard in Japan.

Participated · Series B · Nov 2025

Sakana AI is a Tokyo-based AI research lab focused on creating foundation models inspired by natural systems. The company builds AI foundation models and positions its expertise around using AI to optimize business operations. It intends to use the new investment to expand operations and advance its development efforts. Sakana AI entered a collaboration with Mitsubishi Electric, which plans to leverage the startup’s capabilities to expand solutions and businesses tied to its Serendie digital platform. The company is led by co-founders David Ha (CEO), Llion Jones (CTO) and Ren Ito (COO).