"Clean man" is "깔끔남"(kkal-kkŭm-nam) in Korean.
It is compound word of 깔끔하다 which means "Neat," "refreshing" and, meaning 남"man". Man who keep clean his room, it refers to the clean man who never misses a body care, such as keeping the body clean. Meaning of that there is also the word "clean woman" 깔끔녀 .