Question: What was the real name of Daimaou Kosaka, the man whose single reached 1 on the "Billboard" Japan Hot 100 chart?
Sentence (from "Daimaou Kosaka"): Kazuhito Kosaka (Japanese: 古坂和仁 , Hepburn: Kosaka Kazuhito , born 17 July 1973) , better known by his stage names Daimaou Kosaka (古坂大魔王 , Kosaka Daimaō ) and Pikotaro (ピコ太郎 , Pikotarō , born 17 July 1963) , is a Japanese comedian.
Relevant evidence: Yes