Original Brand

Based on the concept that all things are connected by design.
We bring to the world the message of designers to consumers through our unique “+d” brand that originates in Japan.

Design Consulting

h concept helps companies and production areas develop products that will bring a smile to their user’s face.

Design Product Shop

KONCENT is a store operated directly by h concept, delivering our message to consumers through design. Best known for the original brand “+d”, it develops a large number of products with companies and production areas around the world with the power of design consulting.


We develop products that convey a message to users through their very design.
Do you have a message that you want to share with the world? We can help you send it!

h concept Co., Ltd.

2-4-5 Kuramae,Taito-ku Tokyo111-0051
TEL +81-3-3862-6011
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