Zenryouku Shounen

is a song covered by Hello, Happy World!

The full version of the song is included in their second album SMILE ON PARADE, which was released on June 28, 2023.

It was one of the challenge songs for the event School excursion!! ~Haneoka Arc~.

It was originally sung by Sukima Switch and used as one of the songs the rhythm game Moero! Nekketsu Rhythm Damashii Osu! Tatakae! Ouendan 2. It was later used as the first ending for the anime and second ending for the OVA. It was also used as an theme song for the commercial of in Indonesia.

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