Start from Zero (kimidorilover)

Yamaguchi Ai is a piano-vocalist in the husband-and-wife duo USK, which consists of Cajon & Percussion.

The unit began activities in 2010, and their 3rd single, "0-Second Start," was aired for a week on the nationwide TBS radio program "Anata e Morning Call."

Appeared on FM83.5 Takarazuka's "Growing Radio Show."
In August 2011, they were selected as the August Champion in the KinKi Music Champion Audition, hosted by FM85.1 and Yoshimoto Stargate.
In September 2011:
Performed at YOUNG JACK VOL.1, an event hosted by Kansai TV's "Mu-Jack."
Selected as a Hall of Fame Artist in Tokyo FM81.3 J-WAVE's "MUSIC HYPER MARKET" 2011 Summer Special.
Ranked 17th upon their first appearance in the program's rankings.
As of 2025, solo activities have become the main focus, and Kimidori Lover (Kimidori Lover) has been less active in recent years.
Therefore, the three-song release from September 28, 2011, under the name "Yamaguchi Ai" is now being re-released!