Zio, who lives with her older brother 'Seo Yoon-oh', has little fun or interest in the world. 　　During the vacation, he works part-time in the waste disposal dept. of Green Corporation, where his older brother works at. 　　After Choi Doo-sik, chairman of Green Corporation, resigned and his sons "NJ" and "TJ" took over the company, this giant company has started to operate under the ... (展開全部)