R's Koso has sponsored 6 YouTube channels, including Yasuko Kawamura and Samurai Matcha. See full sponsorship history and 2026 campaign data on SponsorRadar.
YouTube channels sponsored by R's Koso
Latest videos sponsored by R's Koso
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Other brands in Lifestyle & Vlog
Yes. SponsorRadar has identified 15 sponsored videos from R's Koso across 6 YouTube creators, with deals as recent as July 2026. That makes them an active buyer of creator sponsorships, not a cold prospect.
Creators sponsored by R's Koso include Yasuko Kawamura, Samurai Matcha, Chani Japan. The full roster is above. Before pitching, check that your channel's niche and audience size are comparable to the channels they already work with.
Brands that already sponsor creators respond to pitches that show fit: reference the kind of channels they sponsor, lead with your audience data, and include your rates. Our guide to getting sponsored by R's Koso breaks down their channel-size and niche patterns from tracked deal data.
Full sponsorship history, the creators they come back to, and the right contact, in the app.
