During the 'Star Golden Bell' special on August 24, Kai talked about his trainee days and revealed, "I was born earlier in the year so I went to school earlier than most kids my age. I was in the same grade as Taemin so I suggested we�be friends but he said he's the hyung."

Kai was born in January of 1994 while Taemin was born in July of 1993.�

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To this, Taemin explained, "At the time, it was decided that we go by the year we were born." He continued, "Kai ended up dropping the honorifics�anyway."