HAPPY HAPPY

 is the debut single released by KUWAGATA☆KIDS.

It was released on March 7, 2020, for purchase at live venues only. A music video for the seven member version appeared on YouTube on March 21, 2021.

Tracklist

 * 1) HAPPY HAPPY
 * 2) Penguin Koushinkyoku (ペンギン行進曲; Penguin March)
 * 3) HAPPY HAPPY (Instrumental)
 * 4) Penguin Koushinkyoku (Instrumental)

Featured Members

 * Runa Runa
 * Mari
 * Mire Run
 * Saerin
 * Eri
 * Mana