Creating a future with startups.

Leveraging the Mitsui Fudosan Group’s broad scope of operations in Japan and abroad, 31VENTURES has established a platform to comprehensively support the growth of startups with “Community,” “Support” and “Finance” in its core.Startups possess new products and technology services that can defy stereotypes, and their commercialization and development require offices, human resources, sales channels, funds and many other resources. Our aim is to establish a new industry which can create a bright future by collaborating with such startups, through utilization of assets and networks of the Mitsui Fudosan Group that provides solutions to business and everyday life.


Executive Manager

Nobuyuki Tanaka

Before joining this department, Mr.Tanaka was engaged in commercial land aquisition, setting up Mitsui Fudosan Resort Co.,Ltd and corporate solution business.

Project Manager

Hirofumi Iwasaki

Mr. Iwasaki joined Mitsui Fudosan in 2011 and worked in building sale.
From 2016 he moved to Business Planning Department where he was involved in land aquisition in Nihonbashi area and redevelopment of Nihonbashi postal district.
From 2019 he works in this department.

Keiichirou Koumura

Project Manager

Keiichirou Koumura

With his unique business background in the editorial field at Japan’s largest publisher, Mr. Koumura brought his diversified skill set to Mitsui Fudosan in 2007.
He was in charge of launching Clip Nihonbashi, Mitsui’s major co-working space in Tokyo.
He graduated with a BA in Literature from Waseda University. He is a mentor of KDDI ∞ Lab.
Team “Cinderella Shoes,” for which he served as mentor, was named the best team of the KDDI ∞ Labo 8th Program.

Masahiro Takezawa

Prior to joining this department, Mr Takezawa was involved in real estate securitization for 5 years and logistic facility business for 7 years.

Tomohisa Shiohata

Mr. Shiohata joind Mitsui Fudosan in 2012.
Prior to joining this department, he was engaged in collaboration with tenant companies and setting up shared office WORK STYLING.

Jou Kodama

Executive Manager

Takeshi Kodama

Mr. Kodama enlarged the portfolio of Mitsui Fudosan’s U.S. subsidiary Mitsui Fudosan America from 2011 to 2015 as Director of Acquisitions.
He has more than 10 years’ business experience in real estate investment both in Japan’s market and in the U.S. market.
As for entrepreneurial experience, he was in charge of business development and operation of Mitsui Fudosan’s corporate venture project, Liveonce home furnishing store chain in Japan.
He graduated with a BA in Political Science from Waseda University and earned Certification in Business Excellence from Columbia Business School in 2011.

Professional Certifications

Certified Real Estate Appraiser in Japan,MRICS

Project Manager

Shinji Kato

Before joining this department, Mr. Kato was involved in Apartment development, after-sales services and dealing with public institutions and public organization.

Kan Notoya

Kan Notoya

Mr. Notoya has been working for in-house legal department and has been involved many Mitsui Fudosan’s ASEAN projects.
Mr. Notoya has graduated with BA in Law from WASEDA University.

Riho Sasaki

Ms. Sasaki is an accountant of Ernst & Young ShinNihon LLC.
She has experience in accounting audit and IPO support.

Yohei Kamikubo

Yohei Kamikubo

Mr. Kamikubo joined Mitsui Fudosan in 2019.
Prior to joining this company, he worked as a musician for a long time, as well as an accountant in charge of audit, IPO support, and financial advisory services at Deloitte Touche Tohmatsu LLC.
He also has an experience as an analyst in New York branch of Sumitomo Mitsui Trust Bank.

Yusuke Shioyama

Yusuke Shioyama

Mr. Shioyama joined Mitsui Fudosan in 2019.
Before joining this company, Mr.Shioyama was engaged in audit and advisory service at a major accounting firm, development and support for a new business at a consulting firm.
He also has an experience in investment in startup, support for alliance, and event planning at a co-working service company.

Chie Yamashita

Ms. Yamashita joined Mitsui Fudosan in 2020.
Prior to joining the company, she worked for a branding consultancy firm. She was assigned for various business development projects, taking part in concept development, planning, PR, and various creative direction.


Mitsui Fudosan’s Venture Spirit

A venture company born in the Edo Period – “Echigo-ya”

“Cash only, prices as advertised”, “sales at the store”, “sales in small quantities” — innovation creating new marketing systems from customer standpoint

Development of the ocean – “reclamation project of Keiyo Waterfront District”

A grand project turning ocean into land in the metropolitan area when industrial and residential properties became scarce during the high-growth period
A radical challenge to “create a land, not search for it”

Development of the sky – “Kasumigaseki Building”

The first skyscraper in Japan, creating open spaces, and opening toward the sky
Aseismic innovation in Japan, leading a skyscraper era with innovative technologies

Platform projects for life-style creation

  • Opened a new shopping mall “LaLaport” where life styles are born (1981- )
  • Supported the opening of Tokyo Disneyland (established Oriental Land Co., Ltd. in 1960)
Urban Development Innovation “Kashiwa-no-ha Smart City”

Created a city as a solution model to world’s social challenges through collaboration among public, private and academia

Established Venture Co-creation Division to work with startups
Established Venture Co-creation Department


Venture Co-creation Department, Mitsui Fudosan Co., Ltd.



Nihombashi-Muromachi Tower

3-2-1, Muromachi, Nihonbashi, Chuo-ku
Tokyo 103-0022





    • 1 min. walk from Mitsukoshimae Station (Tokyo Metro Ginza Line), Directly connected to the station
    • 1 min. walk from Mitsukoshimae Station (Toei Subway Hanzomon Line), Directly connected to the station


  • JR 1 min. walk from Shin-Nihombashi Station (JR Yokosuka-Sobu Line rapid service train), Directly connected to the station