otorii INNOVATED -[i]3- is a high-energy crossover track by NAOKI underground, the alias former Capcom composer NAOKI MAEDA uses for his harder-edged productions. The song originated as a surprise, unannounced addition to CHUNITHM STAR on April 1, 2018, many players initially believed it was an elaborate prank until Sega's official Twitter account confirmed the addition the next day. It later crossed over into ONGEKI and then maimai, making it the only song to debut across all three Sega rhythm game series through separate April Fools events. In maimai, the track arrived in maimai DX UNiVERSE PLUS on April 1, 2022, featuring unique jacket art with the Delu-kuma (でらっくま) mascot, distinct from the NAOKI portrait used in the CHUNITHM version and the Ayaka Saotome artwork in ONGEKI. The song's title references Ōtorii Station (大鳥駅), the railway station nearest to SEGA's former office building at the time of the song's creation. Musically, the track sits at a core 210 BPM but briefly accelerates to 240 BPM during its chorus, a shift that Master chart designer Hz-R.Arrow incorporated into the chart's flow. The song is the third entry in a sequence that began with MEGALOMAN[i]A and MEGALOMAN[i]A -2nd IMPACT- from the crossbeats REV. series.