Kisuke no Yuujin

Kisuke no Yuujin (キースケの友人) is a relatively new, having debuted in late 2012. As her name suggests, she is a close friend of the and mixer Kisuke, who mixes and uploads the majority of her covers. She is well-known for her versatile and highly flexible voice, being capable of singing in both a very natural-sounding male voice and a markedly feminine one, as well as switching between both registers with relative ease - all without the aid of voice editing software, making her one of the site's most effective female, or "trap" singers.

As she tends to cover "group" songs that contain more than 5 different singing roles by herself, her almost uncanny ability to differentiate between multiple discernably separate male voices and female voices is often noted (in fact, it is stated that she is capable of more than 20 audibly different voices ); this is most apparent in covers like "Yankee Boy・Yankee Girl" and "Tokyo Dennou Tantei Dan". In addition to singing, she can also speak and voice act in a variety of voices, most notably seen in her cover of "Kochira, Koufuku Anshin Iinkai Desu.".

Initially, her gender was kept a secret, though she had hinted at being female through her use of strictly feminine first-person pronouns. However, due to a lack of actual confirmation, it remained a frequent topic of debate among fans until very recently. In May 2013, she put an end to speculation via a parody cover of "E? Aa, Sou.", "♂?, Iya, ♀ da.", in which the lyrics were rewritten to express her mounting frustration and irritation at being mistaken for a boy by both listeners and people in real life.