Wacha-Mocha-Pettan Koushinkyoku

is a song by Hello, Happy World!

It is the coupling track for their 3rd single, Kimi ga Inakucha!, which was released on December 5, 2018.

It is the gift song for the event Little Smiley Steps!

It was written by Oda Asuka, and arranged and composed by Suemasu Ryota.

Video
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Live Performances

 * May 15-16, 2021: Welcome to OUR MUSIC♪