/Investor DB

MPower

Venture capital

Seed–Late Stage · 10 people tracked

Also known as 株式会社MPower

Find your way into MPower

Sign up to see every warm intro you have to MPower

  • Paths you didn't know you had: your email and LinkedIn already hold routes to the MPower team. We find them for you
  • 2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
  • Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

✨ Fox Verdict
Sign up to see your fit

Investment thesis

MPower Partners backs entrepreneurs building the next era across all growth stages, providing funding, a broad global network spanning public and private sectors, and domain expertise to help startups reach their next stage of growth. Founded as Japan's first ESG-specialized fund by three female general partners with deep experience in global finance — macro and micro corporate analysis, asset management, investment research, and capital strategy — the firm emphasizes diversity, environmental impact, and ESG-driven management within its portfolio companies while connecting founders to overseas institutional investors, customers, and talent.

Source: firm website, verified Aug 3, 2026.

Stage
Seed–Late Stage
Instruments
Equity
Founded
2021
Tracked investments
35
Unicorns
1

Team · 10 people

from the firm's website
Kathy Matsui· General Partnerin

Co-founder and general partner of MPower Partners; the firm was established by her and two other partners in 2021.

Miwa Seki· General Partnerin

General Partner at MPower Partners who moderated the 'She Leads We Rise' founder panel.

Yumiko Murakami· General Partnerin

Co-founder and general partner of MPower Partners, established in 2021.

Katherine Davidson· Operating Partner
Lisa Shalett· Operating Partner
Chi Guillemette· Legal & Compliancein
Mark Schwartz· External Advisorin

Former Vice Chairman of the Goldman Sachs Group.

Paul N. Matsui· Industry Expert

CDO and VP of strategy at Digital Health Strategies, a US healthcare marketing firm. Has led analytics and strategy teams for 30+ years at the Advisory Board Company (now part of Optum) and Socially Determined; holds a bachelor's in biochemistry/molecular biology from Harvard.

Peter Gruss· External Advisor

Special advisor on innovation and President Emeritus of the Okinawa Institute of Science and Technology (OIST).

Simeon Bochev· Industry Expert

Co-founder and CEO of seed-stage AI infrastructure startup The Compute Exchange. Previously led AI infrastructure strategy at Apple and served as VP of strategy at Lambda; holds an HBS MBA and studied engineering and finance at UT Austin.

What they invest in

from 31 of 35 portfolio companies

AI & Machine Learning ×10SaaS ×8Consumer ×7Deep Tech ×6Healthtech ×5Enterprise Software ×4HR Tech ×4Climate Tech ×3

HQs:Japan×25United States×3Indonesia×1Singapore×1

Who they back

founder profiles across 19 portfolio companies
42%
solo founders
8 of 19 mapped founding teams
13%
repeat founders
of 16 founders with career history

Founding team size:solo founder×82 founders×53 founders×44+ founders×2

Where their founders studiedfrom 15 founders with education data

The University of Tokyo ×3UCLA ×2

What their founders studiedfrom 18 founders with field-of-study data

Engineering ×6Business & Management ×3Physics ×3Computer Science ×2Economics ×2Finance & Accounting ×2

Where their founders worked beforefrom 16 founders with career history

Goldman Sachs ×2Google ×2Mercari, Inc. ×2

Accelerator rootsportfolio companies that came through a program

Techstars ×2

Investments · 35 tracked

founders shown can be your intro path
Aclimaaclima.earthin

Aclima operates a network of mobile and stationary sensors that measure air pollution and greenhouse gases at block-by-block resolution, and offers analytics software (Aclima Pro) and a free consumer app (air.health) that turn these measurements into environmental data for governments, companies, and communities.

Climate TechConsumerData & InfrastructureDirect to ConsumerE-commerceGovTechIoTSan Francisco, US

Co-investorsCool Climate CollectiveDCVC (Data Collective)Kapor CapitalRadicle ImpactACVC PartnersBosch Ventures+6 more

ClipLine㈱clipline.com

ClipLine develops and operates ABILI, a platform for service businesses, alongside offering management consulting services.

Enterprise SoftwareFuture of WorkHR TechSaaSTokyo, JP

高橋 勇人

Co-investorsCanal VenturesDBJ CapitalAizawa Asset ManagementIncubate FundSMBC Venture CapitalDG Daiwa Ventures

Cyto-Factocytofacto.com

Cytofacto appears to be a Japanese startup involved in cell therapy / regenerative medicine, engaging in contract manufacturing of cell-based products (e.g. an agreement regarding manufacturing of "Stemchymal").

Advanced ManufacturingBiotechMedical Devices

Co-investorsAsahi Kasei Corporate Venture CapitalKobe University Capital

EX-Fusionex-fusion.com

EX-Fusion is a Japanese private company developing laser-based nuclear fusion energy technology, aiming to decarbonize existing energy sources and contribute to carbon neutrality.

CleantechDeep TechEnergyKyoto, JP

Kazuki Matsuo(Founder)inShinsuke Fujioka(Founder)Yoshitaka Mori(Founder)

Co-investorsChishima Real Estate — Startup InvestmentDelight VenturesMiyako CapitalOSAKA University Venture CapitalShizuoka Capital

FastLabel㈱fastlabel.aiin𝕏

FastLabel operates a data engine for AI systems that handles data collection, annotation, and foundation model R&D in a single workflow.

AI & Machine LearningData & InfrastructureDeep Tech

Takeshi Suzuki(Founder)inEisuke Ueda(Founder)Takeshi Suzuki Eisuke Ueda(Founder)

Co-investorsDBJ CapitalGenesia VenturesNTT DOCOMO VenturesSony Ventures CorporationIncubate Fund

Heralbonyheralbony.com𝕏

HERALBONY is a Japanese company that turns artwork by people with disabilities into products and various forms of design, building new culture with welfare as its starting point.

ConsumerImpact & Social Good

Takaya Matsuda(Founder)in

Co-investorsDentsu VenturesWorld Innovation Lab (WiL)

HQhq-hq.co.jp

HQ is a Japanese provider of employee benefits services, offering a next-generation cafeteria plan that lets companies combine services such as meal support, remote-work allowances, reskilling, coaching, and health management through a single ID and shared data platform.

AI & Machine LearningHR TechSaaS

Co-investorsCoral CapitalGlobal Brain

Jupiter Intelligencejupiterintel.comin

Jupiter Intelligence provides physical and extreme weather risk analytics that translate climate exposure into finance-linked, audit-ready metrics for capital planning, underwriting, portfolio management, and resilience investment.

AI & Machine LearningClimate TechFintechInsurTechSaaSSan Mateo, US

Eric Wun(COO & Co-founder)inRich Sorkin(Founder)inJosh Hacker(Chief Science Officer & Co-founder)inMonica Jain(Head of Finance)inJaz Sidhu(Head of Global Revenue)inAlan Samuels(Head of Product)in

Co-investorsDCVC (Data Collective)Energize CapitalMS&AD VenturesSystemiq CapitalSYSTEMIQ

Knownsknowns.co.jp

Knowns provides consumer research services through an online platform, designed for rapid and accessible market research.

Marketing Tech

Co-investorsHiroshima Venture Capital Co. Ltd.

LQUOM株式会社lquom.comin𝕏

LQUOM develops long-distance quantum communication technology and quantum repeaters to enable theoretically unhackable quantum internet for sectors including finance, telemedicine, and defense.

CybersecurityDeep TechQuantum ComputingYokohama, JP

Kazuya Niizeki(Co-founder & CEO)inTomoyuki Horikiri(Co-founder & CSO, Director)in

Co-investorsOSAKA University Venture Capital

Magic Shieldsmagicshields.co.jpin

Coroyawa is a specialized flooring material designed to reduce fracture and trauma risk for elderly users by combining stable walking comfort with impact absorption during falls.

HardwareHealthtechMedical DevicesNew MaterialsHamamatsu, JP

Yuya Miyajimain

Co-investorsCarbide VenturesHulic StartupIDATEN VenturesInclusion JapanJIC Venture Growth InvestmentsMonozukuri Ventures+1 more

NaLaLys AIを活用した企業のコンプライアンスを高度化、効率化するためのSaaSプラットフォームを展開nalalys.comin𝕏

Nalalys is a company focused on preventing fraud and creating fair, safe business environments through technology.

AI & Machine LearningCybersecurityEnterprise SoftwareLegalTechSaaS

長谷島 良治(代表取締役 CEO/Founder)

Co-investorsDelight VenturesDnx Ventures

newmo株式会社newmo.me𝕏

Newmo operates taxi services and autonomous taxi operations in Japan, serving regional transportation needs in areas facing labor shortages and declining population.

B2B MarketplacesMobility & TransportationSaaSTokyo, JP

松本 龍祐(Founder)inKentaro M.(Founder)in松本龍祐(Founder)青柳 直樹(代表取締役 CEO)Naoki Aoyagi(Founder)

Co-investorsBonds Investment GroupCoral CapitalDCM VenturesDIMENSIONGlobal BrainGlobis Capital Partners+9 more

Phoenix Tailingsphoenixtailings.comin𝕏Jul 2021

Phoenix Tailings develops clean technology for rare earth element refining in the United States.

Advanced ManufacturingCleantechClimate TechEnergyFintechNew MaterialsBoston, US

Thomas Villalón(Chief Technology Officer & Co-Founder)Anthony Balladon(Founder)inMichelle Chao(Founder)inNick Myers(Chief Executive Officer & Co-Founder)inNicholas Myers(Founder)Tomas Villalon(Founder)

Co-investorsBantam GroupBMW i VenturesCoalitionEni NextGaingelsGeodesic Capital+15 more

Rukitarukita.coin𝕏

Rukita is a proptech company that provides managed rental housing in Indonesia, offering serviced apartments, coliving spaces, student housing, and family residences with furnishing and hospitality services.

ConsumerMarketplacesPropTech

Sabrina Soewatdy(Founder)Sabrina Soewatdy Sarah Soewatdy(Founder)

Co-investorsGolden Gate VenturesOCBC NISP VenturesOpenspace VenturesPeak XV PartnersiSeedShunwei Capital

S Gboosthealth.jp

Boost Health operates BOOST, a "talent success" platform that combines AI tools with professional coaches to support employee performance and behavior change, grounded in cognitive behavioral therapy.

AI & Machine LearningHR TechMental Health

芳賀 彩花(Founder & CEO)平賀 養(Co-founder & CTO)Haga Ayaka(Founder)in田中 研之輔(CHRO)石田 麻美(VP of Operations & CS)岩田 尚美(VP of Product)

Co-investorsDG IncubationGenesia VenturesOpen Network Lab

Sakana AIsakana.aiin𝕏

Sakana AI develops frontier AI research and products, including large language models, multi-agent orchestration systems, and AI solutions tailored for Japanese enterprises and public sector organizations.

AI & Machine LearningCloud ComputingDeep TechDefense TechTokyo, JP

David Ha(Founder)inRen Ito(Founder)inLlion Jones(Founder)in

Co-investorsBasis Set VenturesGlobal BrainIn-Q-Tel500 GlobalFujitsu VenturesGeodesic Capital+20 more

SHEshe-inc.jp

Provides career schools for millennial women.

Eri Fukuda(Founder)in

Co-investorsGlobal BrainPrime Partners

TAZtaz-co.jp

TAZ develops anti-aging products and drug discovery research focused on cellular senescence removal and longevity science.

BiotechHealthtechLongevityTokyo, JP

Shoko Takahashi(Representative Director (代表取締役))

Co-investorsPOLA ORBIS HOLDINGS

Transcelestial Technologiestranscelestial.comin𝕏

Transcelestial provides laser-based free-space optics (FSO) communications hardware for restoring network connectivity after disasters, offered as a portable, self-contained kit.

Cloud ComputingDeep TechDeveloper ToolsHardwareMedia & EntertainmentSpace TechSingapore, SG

Rohit Jha(CEO)inMohammad Danesh(CTO)in

BoardYuichiro Hikosaka

Co-investors500 GlobalAirTree VenturesBeyond Earth VenturesCapria VenturesChampion Hill VenturesEntrepreneur First+11 more

Txp Medicaltxpmedical.jp𝕏

TXP Medical develops and provides medical data systems for emergency, intensive care, and emergency-services settings (the NEXT Stage ER series) as well as an oncology research data system, along with a medical data platform, real-world data analysis, and clinical research support.

AI & Machine LearningData & InfrastructureDigital HealthHealthtechMedical DevicesTokyo, JP

園生 智弘(代表取締役 (Representative Director / CEO))原田 惇(取締役CTO (Director & CTO))後藤 匡啓(執行役員CSO (Executive Officer & CSO))恩田 淳(執行役員 (Executive Officer))in

Board大熊 一毅(取締役 / 弁護士 (Director, Attorney))

Co-investorsUTEC

Uniamuniam.jp𝕏

A cat scratcher and hideaway box designed with cat behavior in mind, reducing stress through safe enclosed spaces while maintaining aesthetic appeal for home interiors.

Circular EconomyConsumerDirect to ConsumerWellness & FitnessMino, JP

Ai Sugimoto(Founder)in

Co-investorsANOBAKAG-STARTUPW Inc.

Wovn Technologies株式会社wovn.ioin𝕏

Wovn Technologies provides website and app localization services through its WOVN.io and WOVN.app products, enabling organizations to translate and adapt their digital properties for multiple languages.

Developer ToolsEnterprise SoftwareMarketing TechSaaSTokyo, JP

Takaharu Hayashi(CEO)in

Co-investorsKintetsu Venture Partners

イチロウichirou.co.jp

Ichirou operates a caregiving workforce sharing platform and provides home care support and facility referral services for the elderly care market in Japan.

B2B MarketplacesDigital HealthHealthtechHR TechTokyo, JP

Co-investorsCygames CapitalDG IncubationFast Track InitiativeGlobal BrainOpen Network Lab

ユニファ株式会社unifa-e.com𝕏

Unifa develops "Lumie" (Look at me), a suite of products for childcare facilities and parents that includes IoT devices such as a medically registered body-motion sensor and childcare AI to record children's photos, health status, and developmental notes.

AI & Machine LearningConsumerEdTechIoTSaaS

Co-investorsDIMENSIONFujitsu VenturesHakuhodo DY VenturesJapan Post Capital Co. Ltd.Minerva Growth PartnersRegrowth Capital Management+1 more

リセlisse-law.com𝕏

Lisse provides AI-powered legal document review and legal compliance support services to enterprises.

AI & Machine LearningEnterprise SoftwareLegalTechTokyo, JP

Miki Fujita(Representative Director & CEO)藤田 美樹(代表取締役 CEO)

Co-investorsAngel Bridge Co.,Ltd.Global BrainNTT DOCOMO VenturesPrime PartnersSpiral CapitalSpiral Innovation Partners+1 more

助太刀suke-dachi.jp

Sukutachi is a mobile app that connects construction businesses and craftspeople to discover work opportunities and expand their professional networks.

Construction TechMarketplaces

Co-investorsAG Capital Co. Ltd.ANOBAKAGenesia VenturesJapan Post Capital Co. Ltd.Miyako Capital

株式会社MiRESSOmiresso.co.jp

Miresso develops beryllium materials and supply chain solutions for fusion energy applications.

Deep TechEnergyNew MaterialsMisawa, JP

Masaru Nakamichi(CEO)inYu Nakano(Technical Development Director)

Co-investorsGenesia VenturesGlobal BrainKeio Innovation InitiativeNTT DOCOMO VenturesSpiral CapitalSpiral Innovation Partners+1 more

株式会社RABOrabo.cat𝕏

RABO provides pet care services and technology solutions for cat owners and pet service professionals in Japan.

ConsumerHealthtechWellness & FitnessTokyo, JP

Yukiko Iyo(President & CEO)in

Co-investorsGlobal BrainSTRIVEW Inc.DG Daiwa VenturesHeadline AsiaMizuho Capital+2 more

株式会社ヘラルボニーheralbony.jp𝕏

HERALBONY is a Japanese art and lifestyle brand that licenses and commercializes artwork created by artists with disabilities (including intellectual disabilities and autism), turning their work into products under an "artist first" model that fairly compensates the artists and welfare facilities.

ConsumerCreator EconomyImpact & Social GoodMedia & EntertainmentMorioka, JP

松田文登(Co-founder)松田崇弥(Co-founder)

Co-investorsDentsu VenturesJR East Start UP

株式会社ミツモアmeetsmore.com𝕏

Meetsmore (ミツモア) is an online marketplace that connects individuals and businesses with local professionals; this page focuses on matching users with tax accountants (税理士) experienced in handling tax investigations in Japan.

FintechLegalTechMarketplacesSaaSTokyo, JP

柄澤史也(Founder)Ayako Ishikawa(Founder)in

Co-investorsAngel Bridge Co.,Ltd.Iyogin CapitalMS&AD VenturesNTT DOCOMO Ventures

詳細はこちらをご覧くださいedgecortix.comin

EdgeCortix develops AI inference products and hardware for edge computing, enabling low-power deployment of vision and generative AI models on resource-constrained devices.

AI & Machine LearningHardwareSemiconductorsTokyo, JP

Dr. Sakyasingha Dasgupta(CEO and Founder)Sakyasingha Dasgupta, PhD(Founder)inSakyasingha Dasgupta(Founder)

Co-investorsSBI InvestmentGlobal Hands-On VCIn-Q-TelMonozukuri VenturesAero X VenturesTDK Ventures

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

MamawellMantraSHE株式会社

Portfolio news

latest coverage across their companies

Frequently asked questions

How many investments has MPower made?
MPower has 35 tracked investments.
What stage does MPower invest at?
MPower invests at the Seed, Series A, Series B, Growth, Late Stage stages.
What sectors does MPower focus on?
MPower focuses on Climate Tech, Impact & Social Good, Sector Agnostic.
Who does MPower co-invest with?
MPower most often shares deals with Global Brain, NTT DOCOMO Ventures, Genesia Ventures, among 103 tracked co-investors.

Media · Podcasts & interviews

featuring the team

Leading Funding Rounds | General Partner of MPower Partners | Kathy Matsui

Decode · Kathy Matsui

Japan Ahead: MPower Partners' Kathy Matsui on ESG

Bloomberg Television · Kathy Matsui

Images

MPower photoMPower photoMPower photoMPower photoMPower photoMPower photo

Similar investors

Featured in lists