Amatsuki

Amatsuki (天月) is an utaite with a cheery shota voice. He loves to cover songs freely, not caring if he hits wrong notes. However, as shown in his "Nijigen Dream Fever" MV, he can sing with much strength and seriousness. He is also noted for his "elmo" voice. He is 30 years old, but his appearance is still like a teenager's and his behaviour is somewhat childish as well, as seen from his tweets and his blog profile.

(Source: Utaite Wiki)