Amatsuki (天月) is an individual who enjoys singing freely in their cheery shota voice, regardless of whether they hit the right notes or not. However, as demonstrated in their "Nijigen Dream Fever" performance, they possess a significant amount of strength and seriousness when performing. Additionally, Amatsuki is recognized for their "elmo" voice. Despite being 25 years old, their appearance remains that of a teenager, and their behavior exhibits some childish tendencies, as seen in their tweets and blog profile.