One Thing - T-Shirt
One Thing - T-Shirt
Couldn't load pickup availability
- 30 day guarantee
- 7 day delivery
- Free returns
This Zen calligraphy T-shirt features authentic artwork by the celebrated Edo-period master Jiun Onkō. Combining historical Japanese calligraphy with modern minimalist design, this piece serves as a daily reminder to dedicate yourself to what truly matters.
The design
The striking design centers on the Japanese expression Ichi o motte kore o tsuranuku, which we rouhgly translate into "Double down on one thing." The bold, sweeping brushstroke representing "one" (ichi) is reproduced directly from Jiun Onkō’s original calligraphy.
To preserve the integrity and balance of the original composition, our signature red Kokin Denju seals are carefully positioned in the exact location and scale of the artist's historical hanko stamps.
Rooted in classical philosophy and Zen practice, this inscription speaks to the value of unwavering dedication and singular focus.
The artist
Jiun Onkō (1718–1804) was a prominent Japanese Shingon monk, scholar, and calligrapher of the Edo period. Renowned for his powerful, uninhibited brushwork, Jiun developed a distinct calligraphic style that reflected his deep commitment to discipline, mindfulness, and spiritual clarity.
Why you'll love it
- Features authentic Edo-period Zen calligraphy digitally restored directly from the original artwork.
- Super-soft cotton, ideal for training, meditation or a good walk.
- A meaningful gift for martial artists, calligraphers, entrepreneurs, or anyone working toward a long-term goal.
Details
Details
👕 Soft Quality. Super soft material for ultimate comfort, medium weight
👬 Unisex Fit. Designed for all bodies with a comfortable, stylish cut
🧵 100% Cotton. Largely sourced within the US. (Sport grey shirts: 90% cotton, 10% polyester)
📏 True-to-Size & Pre-Shrunk. Buy your usual size.
🌱 Eco-Friendly. Made with OEKO-TEX certified low-impact dyes
💦 Long lasting. Wash inside out for best results
🇺🇸 Proudly printed, packaged, and shipped in the USA.
Sizing
Sizing
You can find our Size Chart here.
How to care
How to care
In Japanese tradition, from the tea ceremony to martial arts, there exists a profound respect for the objects we carry and use. If you would like to provide good care for your new shirt, we suggest the following guidelines:
- Wash your garments inside-out to protect the print.
- Wash with similar colors to prevent discoloration.
- Use a mild detergent.
- Avoid the tumble-dryer – let it dry in the air.
Japanese Zen teaches us the impernanence (mujō) of all things. Your new shirt won't last forever. But if you care for it, it will thank you by aging gracefully.
Shipping & returns
Shipping & returns
Shipping
Our flat shipping fee per order is $4.99. Free shipping on all orders over $75.
Our average delivery time is 7 business days. We ship across the U.S. and keep you updated at every turn. Once your order is placed, use our live tracking tool to see exactly when your package will arrive.
30 Day Guarantee for Returns
Our goal at Kokin Denju is that you love your order. You can request a return & refund within 30 days from receiving your order – no questions asked.
