デコボコ体操第二 (Dekoboko Taisou No.2, "Dekoboko Exercise No.2") is an original song composed, arranged, and performed by Sega sound veteran Takenobu Mitsuyoshi (光吉猛修), with backing from the 体操隊 (Exercise Team). It was commissioned for "つくって走ろう！でこぼこモーターズ" (Dekoboko Motors), a children's driving experience attraction installed at Sega storefronts in Tressa Yokohama and mozo Wonder City in Nagoya, designed for children ages 3 and up. The song debuted in maimai PLUS on January 17, 2013, and has been carried forward through every subsequent version, currently categorized under the GAME & VARIETY genre. Built around a steady 140 BPM beat, the track pairs call-and-response lyrics rich with playful onomatopoeia, "シュバババーン" (shubababaan) and "びゅびゅびゅびゅーん" (byubyubyubyuuun), with a straightforward exercise cadence designed to get even the youngest listeners moving. Mitsuyoshi, who has said he "always wanted to be an exercise leader on TV since childhood," personally choreographed and performed the gymnastics routine in the song's promotional video. That performance is directly reflected in the MASTER chart, designed by mai-Star, whose note flow recreates the on-screen movements. The EXPERT chart was designed by はっぴー. Over maimai's lifespan the MASTER difficulty has risen substantially, from level 9 at launch to its current 10+ in the DX era, tracking the game's expanding difficulty ceiling while preserving the chart's choreographic identity. The jacket art features characters from Sega's Block People (ぶろっくぴーぽー) arcade game, grounding the song firmly in the company's broader amusement-machine lineage.