Koga treats ROCK CUP as a canvas, and what he draws on it are only positive words such as "Get Stand Up," "Stay Gold," and "Silver lining" that imitate graffiti. This is Koga's message to the world suffering from the coronavirus pandemic.
The studs that cover the entire piece are punk, and the graffiti is street culture, and these are all captured in the canvas of tableware, which has developed in Japanese culture.

The SPIKY series dares to approach the flat modern way of looking at things with a sense of foreignness.
A luxurious piece using gold and platinum.

Its distinctive shape is as if it refuses to be picked up.
The "studs" that protrude from the container are visualizations and touchables of the power inherent in objects. The work is a powerful expression, as if the power hidden within bursts to the surface.

Ceramics are a traditional craft that has been cultivated over a long history. Koga intends to give a fresh surprise to the person who holds it by providing a formative stimulation to it.