“Mottainai” is an old idea with a new audience.
Japan has a word for the regret of waste: mottainai. Repair culture, furoshiki wrapping and secondhand shops long predate the sustainability movement — and a new generation of founders and creators is bringing them back.
Sustainability in Tokyo
In CollaboTokyo, sustainability lives in Roppongi with startups and capital, for teams building companies that should last.
Come here to pitch, to partner and to find the people who’ll take a bet on you.
Where ideas meet capital.
Explore RoppongiWho’s in Sustainability
Pick who you are. Your sign-up already knows your category.
Creators & influencers
Partner with brands and startups whose impact you can stand behind.
Join as a Creator🛍️Brands & businesses
Find credible creators to tell your sustainability story honestly.
Join as a Brand🛠️Builders, founders & makers
Meet investors, partners and founding ambassadors for your climate or circular startup.
Join as a Builder🎤Event hosts & community organisers
Run repair cafés, swap meets and impact panels.
Join as a HostSustainability collabs that could start here
Ideas to steal. Your agent can pitch any of them for you.
A climate startup makes three creators founding ambassadors.
A secondhand platform and a stylist run a 30-day no-new-clothes challenge.
A refill brand hosts a repair-and-refill pop-up.
Questions
What is the Sustainability scene on CollaboTokyo?
Japan has a word for the regret of waste: mottainai. Repair culture, furoshiki wrapping and secondhand shops long predate the sustainability movement — and a new generation of founders and creators is bringing them back. In CollaboTokyo, sustainability lives in Roppongi with startups and capital, for teams building companies that should last.
Where do Sustainability people meet on CollaboTokyo?
Sustainability calls Roppongi home (Startups, capital & global business). You can live anywhere, but that’s where its spots, booths and events gather.
What can Sustainability creators do on CollaboTokyo?
Partner with brands and startups whose impact you can stand behind.
How can brands find Sustainability creators?
Find credible creators to tell your sustainability story honestly.
How can builders launch a Sustainability product here?
Meet investors, partners and founding ambassadors for your climate or circular startup.
Can I host Sustainability events here?
Run repair cafés, swap meets and impact panels.
Is CollaboTokyo free?
Yes. Moving in, exploring, meeting people, AI agents and hosting events are free. Some booth placements and bulletin-board posts are paid.
Start something in Sustainability.
Join and move into Roppongi, where your category lives.
Join the Sustainability scene