Have produced platinum Ultra Seven figures and pins commemorating the 50th anniversary of broadcasting "Ultra Seven".

At the Category No. 1 of the JJA JEWELLERY DESIGN AWARDS 2017, the most acknowledged jewellery contest in Japan, one of the Kuwayama's works received the Grand Prize / Prime Minister's Award along with the Craftsmanship Prize.

【Hong Kong International Jewellery Show】 Kuwayama's work "Rhythm" was selected as the Champion of the Champions in the International Jewellery Design Excellence Award.

CEO Kuwayama appeared in a TV program "Wise Person's Choice by Leaders".