As Japan’s startup ecosystem gains global visibility through platforms like SusHi Tech Tokyo 2026, conversations around diversity and inclusion are becoming increasingly important.

In an exclusive conversation with Collective for Equality (CoFE) in the lead-up to the event, Lina Sakai Watanabe reflected on her journey as a female founder in deep tech and the structural challenges that continue to shape participation in Japan’s innovation ecosystem.

A Minority in the Ecosystem

Women founders remain significantly underrepresented in Japan, particularly in science and deep tech.

“There are very few female founders, and even fewer in technology-related fields,” Watanabe noted.

In many startup environments, she often finds herself the only woman in the room, whether in pitch sessions or investor meetings.

One of the key barriers is the lack of visible role models. When there are few examples of successful female founders, it becomes harder for others to envision themselves in similar roles.

“We tend to think those few successful women are different from us,” she said, pointing to a mindset that limits participation.

Changing this narrative requires not just individual success stories, but broader representation across the ecosystem.

Structural and Cultural Barriers

Watanabe also highlighted the persistence of informal networks, often dominated by male founders, that influence information flow, mentorship and investor access.

“The ‘boys’ club’ culture still exists, and it affects how information and opportunities are shared,” she observed. While there are growing support programmes for women entrepreneurs, she believes systemic change is still needed.

Encouragingly, initiatives from government bodies, corporates and organisations are beginning to create more opportunities for women.

Support programmes, increased awareness and evolving investor attitudes are contributing to gradual change.

However, Watanabe believes visibility remains critical. “I see it as my responsibility to show that women founders exist and can succeed,” she said.

Role of Platforms Like SusHi Tech

Events such as SusHi Tech Tokyo 2026 can play a meaningful role in driving inclusion. By bringing together global participants, diverse founders and ecosystem stakeholders, such platforms can help shift perceptions and create more inclusive networks.

As Japan continues to build its innovation ecosystem, ensuring diversity will be key to unlocking its full potential.