Tea ceremony is a Japanese comprehensive art that developed as a form of education for the samurai class. Sake vessels developed as kaiseki vessels based on this lineage.
Koga describes this work as ``a porcelain cup in the form of a cheek armor, which was naturally derived from the close connection between tea ceremony, Sengoku period military commanders, and crafts, especially pottery.''

Koga says, ``Today's era is like an era of subjugation.''
With the development of social networking sites and the ability for everyone to have a voice, we have entered an era in which people can aim higher than their origins or the area in which they were born and raised, as long as they have the will and courage to speak out. Within this worldview, Cheekyori Cup is a work that uses the unusual helmets of Sengoku warlords as a motif to express the way of life and spirit of people. It is also a shout out to today's high-minded military commanders.