
We don't advise. We operate.
Ebriver was founded in Tokyo by Kota Washizu. We exist because every global brand we'd worked with kept asking the same question: "Who can actually run our Japan storefronts day-to-day, in Japanese, with our P&L on the line?" The answer is us.
By the numbers
- ~20Active brands operated
- ¥474M+GMV under management (FY2025)
- 100%Japan-based team
- 5Languages supported (EN/JA/ZH/KO/FR)
Team

Kota Washizu
Founder & CEO
- Team member 1 (TBD)
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Role TBD
- Team member 2 (TBD)
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Role TBD
- Team member 3 (TBD)
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Role TBD
How we hire / how we operate
We hire former marketplace operators, not consultants.
Every operator on this team has owned a P&L for a Rakuten, Yahoo or Amazon JP storefront before. We do not promote from analyst pools.
Every account has one accountable lead.
Not a pod, not a rotating cast. One name on the contract, one name in your Slack.
We read the P&L weekly.
Before the monthly QBR, we share a weekly written P&L summary covering revenue, ad spend, and margin.
Long-term partner, not project billing.
Performance-fee structure tied to incremental GMV. We are aligned with multi-year outcomes, not 90-day decks.
Get a free 45-minute audit of your Japan storefronts.
We'll walk through your current Rakuten/Yahoo/Amazon presence, identify the top three revenue blockers, and tell you whether we're the right partner. No deck. No follow-up nurture sequence.