ココロオドル (Kokoroodoru) is a cover of the 2004 hip-hop single by the Japanese group nobodyknows+, brought into maimai as part of the ORANGE PLUS update on July 16, 2015. The song originally served as the second ending theme for the anime SD Gundam Force, giving it recognition beyond the group's core fanbase. For its maimai appearance, the arrangement was handled by Takenobu Mitsuyoshi (widely known among rhythm-game fans as 光吉兄貴 / Aniki), who also performed the vocals alongside fellow singer Yuge. One of the most immediately noticeable quirks of this track is its BPM: while the original nobodyknows+ recording sits at 113, the maimai version doubles it to 226, a change whose exact reasoning remains undocumented but adds a relentless energy to the chart. The song was eventually removed from all maimai arcade cabinets on December 14, 2017, making it a legacy track no longer playable in current DX-format releases. A behind-the-scenes "making of" video for the in-game background footage was included as part of the maimai ジューシー★おとりよせBOX (Juicy Otoriyose Box) DVD release. In Asian English-localized builds of maimai, the title is displayed as Kokoroodoru.