Kenichi Maeyamada (前山田 健一, Maeyamada Ken'ichi, July 4, 1980) is a Japanese talent, musician, music producer, lyricist, composer, arranger and video contributor. He was born in Sumiyoshi Ward, Osaka City, Osaka Prefecture. He uses the name Hyadain (ヒャダイン) when working as a singer and a talent. He is attached to Stardust Promotion under the name of Hyadain.

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