Japan · Creator & Ambassador Marketing for Apps
We help venture-backed apps win Japanese users with native creator content — built from real product use, run by a Tokyo team, reported honestly.
Korea programs available.
Figures as reported for the stated period. See notes for sources and caveats.
Services
Ongoing creators posting on dedicated accounts for your app. We run weekly creative briefs, 1:1 coaching and performance reviews, so the roster gets sharper every week.
One-off paid posts from creators who already reach your target audience — for example high-school and college students — on their existing TikTok accounts. Fast reach, fast learning. Top performers graduate to the ambassador program.
We design and run social accounts for your app end to end: concept, scripting, shooting, editing, posting and analysis.
Mix and match by goal. Scope, markets and deliverables are agreed per project.
The problem
Hooks that win in the US often fall flat here. Japanese viewers respond to native formats and real users — not dubbed ads.
Sourcing, briefing, paying and coaching creators in Japanese is a full-time job. Most teams can't staff that from the US.
Posts, views and installs get mixed together. One viral hit hides the median, and nobody knows what to make next week.
How we're different
We work like an extension of your growth team in Tokyo — close to creators, close to users, and honest about the numbers.
Creators use the app before they make content. We brief on why someone keeps using it — not just on what gets views.
Weekly 1:1s, feedback on every draft, and winning formats rolled out across the whole roster.
We separate produced, published, measured and paid. We show the mean and the median. We never count a pending post as zero, or a “yes” as a post.
Sourcing, briefs, payments, analytics — plus localization feedback straight to your product team.
How it works
Goals, target audience, a walkthrough of your product, and a map of the competitor and creator landscape.
We cast creators, onboard them, and write first briefs with hooks and app-demo guidance.
Draft review, approvals, and posting on the agreed accounts.
What worked, what didn't, and next week's briefs — plus product feedback from real users.
Results
Figures are as reported for the stated period. Results depend on product, budget and market; past results don't guarantee future performance.
Visual discovery app · New York
Japan & Korea ambassador program, plus Japan micro-collabs. Weekly creative briefs and 1:1 coaching for every ambassador.
Weekly photo-sharing with close friends
Japan micro-collab program. Top-performing creators moved into ongoing ambassador roles.
Photos to friends' lock screens
Japan TikTok ambassador program.
AI-powered list app
Japan ambassador launch: grew from 2 to 10 ambassadors in 7 weeks, with the first 100K-view video in Japan within 3 weeks.
Camera app for Japanese high-schoolers
Built a paid creator-post engine with high-school TikTokers in Japan, ran a Korea demand test, and interviewed ~100 target users a month.
Network
Two ways to work with creators — and a clear path from one to the other when someone performs.
New accounts created for your app, warmed up, then posting on an agreed cadence. Every account builds an audience around your product.
Creators with existing accounts, booked for one-off posts and matched to your target user. The fastest way to test angles and audiences.
Ambassador
Tokyo · Lifestyle
Micro-collab
Tokyo · Campus life
Ambassador
Seoul · Photo & aesthetics
Micro-collab
Tokyo · Fashion & beauty
Illustrative placeholders — not real creators.
Team
Co-founder & CEO, Koda Inc.
Tokyo-based growth marketer and startup founder. Former marketing lead for Now Camera (TrashX Inc.), which reached the top 10 of Japan's Photo & Video category. Led Japan creator programs as country manager for YOPE and Hypelist, and now runs Cosmos's Japan & Korea ambassador program.
LinkedInCo-founder
[Bio coming soon]
FAQ
Japan, fully. In Korea we run ambassador and micro-collab programs and offer customer support. The in-house content team is Japan only.
Creator outreach typically starts in the first week after kickoff. The exact timeline depends on scope, markets and approvals — we'll map it out on our first call.
It's agreed per project. Account ownership, access, content usage rights and hand-off terms are all set out in the contract before we start.
It depends on markets, volume and services. We scope it on a call and share a clear breakdown of creator fees versus management fees.
Not to start. We'll flag the localization gaps that creators and users run into — and we can help you fix them.
Japan is a large, high-spending smartphone market, and Gen Z there spends a lot of time on TikTok and Instagram. Translated US creatives tend to underperform, so native creators who actually use your product are a real edge.
Book a 30-minute call. We'll look at your app, your audience, and tell you honestly what we'd test first.
Book a call