POTBALL is a character series inspired by the simple, familiar shape of a ball, found in everyday life. Rooted in Korean aesthetics, it celebrates the beauty of curves, seen in HanBok sleeves, traditional tableware, and HanOk rooftops. Korean design embraces curves over sharp angles in clothing, food, and architecture. Equally important is the spirit of inclusion and harmony within Korean culture. From the flowing structure of HanBok to dishes like bibimbap and gujeolpan, symbolizing unity through diversity, and the central courtyards of HanOk that connect space and people, this spirit is woven throughout. POTBALL embodies Korea’s rounded beauty and openness through its simple, playful design, offering endless possibilities for collaboration. With POTBALL, COOLRAIN hopes everyone fills this character with something meaningful. Its motto, "Friendship First," invites people from all backgrounds to connect, enjoy, and grow through art.