1. Stay crazy and keep challenging
  2. Create emotional value
  3. Don't waste time on processes and politics


Hironobu ueno's picture

Hironobu ueno


Ryo Manzoku's picture

Ryo Manzoku


Yukinori Matsuya's picture

Yukinori Matsuya


Aoki's picture

Hirofumi Aoki

Executive Officer/ N Suite Project Producer

Tomi Brooks's picture

Tomi Brooks

Executive Officer/Head of North American Operations

Yasuaki Sakamoto's picture

Yasuaki Sakamoto

Executive Officer/Game Development Supervisor


Hiroyuki KawamotoOutside Director / gumi Inc. CEO
Makoto MotoyoshiAuditor / gumi Inc. CFO
Naoto TamayaAdvisor / Founder
Hironao KunimitsuAdvisor / Financie, Inc. CEO / Thirdverse, Co., Ltd. CEO
Tomohito EbineAdvisor / Legend Partners Ltd. chairman of board of directors


MCH image

MCH logo

A blockchain MMORPG "My Crypto Heroes" that can be played on a smartphone / PC. From the first day of the official service launch on November 30, 2018, it has been ranked No. 1 in the world in transaction volume, transaction volume and DAU as an Ethereum-based blockchain game. At the end of 2018, the industry's first TV commercial was aired. The world's No. 1 blockchain game that still maintains the top ranking. Published by MCH Co., Ltd.

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BFH logo

Number of blockchain game players The world's No.1 “My Crypto Heroes” team presents a long-awaited new work from all over the world. The world of the Brave Frontier app game, which boasts a total of 38 million downloads worldwide, merges with MCH proprietary system that has changed the history of blockchain games.

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My Crypto Saga

My Crypto Saga" is a blockchain game that allows up to four players to enjoy real-time competition. Published by MCH Co., Ltd.

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NTF PLUS+ logo

Blockchain Gaming Solutions

double offers a program to help game developers to build blockchain games. In addition to providing developers with the network, knowledge, resources, and support, we also provide APIs for smart contracts and various systems or solutions necessary for developing and marketing blockchain games.

NFT Enterprise Solutions

We provide a one-stop solution for businesses that want to create their version of collectible NFTs. Our service includes formulating a strategy, product design, UI/UX design, technology consultation, product development, and legal/tax advice.

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Get in touch

NSuite image

NSuite logo

N-Suite is an NFT management software (SaaS) for enterprises that eliminates the complexity of minting, managing, and tracking sales of NFTs. The solution provides a toolkit for businesses, making minting digital assets into NFTs easy and scalable. Enterprises can also confidently secure and manage their private keys using its cloud solution and properly safeguarding their information.

Go to website


ACCESS VENTURESArriba StudioBANNDAI NAMCObitFlyercirclecom2usでらゲーDentsu VenturesdleFENBUSHI CAPITALgumiINFINITY VENTURESJAFCOJUMP CRYPTONext Web CapitalPKOpolygonProtocol LabsSEGASammyWEMADEZ Venture capital


Press release
N Suite, the Enterprise Wallet for Web3 Businesses, becomes AWS Qualified Software Detail
Press release
Oasys L2 blockchain, HOME Verse, and Footprint Analytics, Join Forces to Take Gaming to New Heights with Web3 Analytics Data PlatformDetail
Press release
Oasys’ L2 Blockchain HOME Verse Welcomes 9Lives Arena to its gaming lineupDetail
Press release
OASYX NFT Project Joins Forces with Titles from SEGA’s Iconic Virtua Fighter SeriesDetail


NFT Producer / Marketing

NFT business planning and marketing, project management

Back-end engineer

Backend development with Go / Rust

Engineering Internship

Web application development / analysis work


Company Namedouble Inc.
Company AddressHQ: 4-34-7 Nishi-Shinjuku, Shinjuku-ku, Tokyo Global: 1390 Market St. Suite 200 San Francisco, CA 94102[Map]
EstablishmentApril 3, 2018
Business descriptionDevelopment, operation and sales of games and digital assets using blockchain technology
Member OrganizationsJBA logoJapan Blockchain AssociationCESA logoComputer Entertainment Supplier's Association

For inquiries about games, please contact each game.

Re-building the future of gamingwith blockchain technology!