Task: Explanation
Input (English): Marius Yo (マリウス 葉 , Yo Mariusu ) is a quarter Japanese, quarter Chinese and half German, singer, songwriter, actor, and "tarento" under Johnny & Associates and Pony Canyon. He is a member of the Japanese idol group Sexy Zone. Born in Heidelberg, Germany, his father is German and his mother is former Japanese/ Chinese Takarazuka Revue actress, Akira Yo. Question: A singer who is a quarter Japanese, a quarter Chinese, and half German, is a member of a Japanese boy band that is managed by Johnny & Associates, and had an average age of what when they debuted? Answer: 14.6
Output (English):  He is a member of the Japanese idol group Sexy Zone.