Based in Tokyo, Japan, we carefully deliver authentic Japanese products to customers worldwide.
K E K K A I
Premium Japanese Matcha from Japan
KEKKAI MATCHA is a boundary drawn around what a bowl of matcha should be.
Our tea comes from Matsudacha in Ibaraki, a family manufacturer since 1898. The ceremonial grade is delivered in a tin handmade by Kato Shunji of Kato Seisakusho, a workshop in Tokyo since 1895.
Independently tested for heavy metals including aluminum.
STANDARD and CEREMONIAL GRADE are certified organic under JAS No. 1617.
Launching August 2026.
Available in the United States, Singapore, and Australia.
Available worldwide via our official online store.
About us
From Tokyo to the world – delivering authentic Japanese products with care.
HARMONICA Corporation is a Tokyo-based export company that connects the world with Japan’s most authentic products — from premium matcha to collectible cards.
We specialize in premium trading cards and have developed our own matcha brand, KEKKAI MATCHA, launching in 2026. Each matcha product is sourced exclusively from Japan’s finest tea producers and packaged under our brand to ensure both quality and authenticity.
Based in Tokyo, we serve customers primarily in the United States and other international markets.
We are dedicated to providing authentic Japanese products with the highest standards of quality, reliability, and customer satisfaction.
Our Global Expertise
Proven by results, driven by passion.
With a 150-million yen track record in global trade, HARMONICA Corporation connects Japanese products with the world. From the precise logistics of modern collectibles to the thoughtful curation of premium Matcha, we deliver authentic value that transcends borders.
Modern Culture Export
Drawing on seven years of hands-on experience in the trading card market, we handle the part most exporters get wrong — condition-safe packing, accurate customs documentation, and tracked delivery. Collectors receive what they paid for, in the state they expected.
Traditional Luxury
KEKKAI MATCHA is our own brand, sourced from a single family producer in Ibaraki and packed in tins made by hand in Tokyo. Every lot is independently tested for heavy metals, including aluminum, which no regulation requires us to test for.
Global Curation
Export is where good products go wrong. Customs classification, food safety filings, cold-chain handling — we do this work ourselves rather than hand it to a forwarder, because the details are where value is lost.
Connect with HARMONICA
At HARMONICA Corporation, we don’t see ourselves as just exporters – we aim to be your partners in creating value.
Every inquiry receives our full attention, and we respond with honesty and care.
Share your vision with us – we’d love to hear from you.
© 2023 – 2026 HARMONICA Corporation. All rights reserved.