ステップアンドライム (Step and Rhyme) is a maimai original song composed and written by YASUHIRO(康寛), featuring the VOCALOID voicebank Kagamine Rin. It debuted in maimai DX Splash PLUS on April 28, 2021, as part of the narrative-driven Kotonoha Project (言ノ葉Project) 2nd Season "BLACK ROSE," specifically its Side Story Essence 4. The song carries a brisk detective-theme, underscored by its 155 BPM pop-rock arrangement. Its flavor text, a snippet of in-game story, depicts a scene between two characters, Owl (アウル) and Tristan (トリスタン), as they prepare to face a gang of thugs surrounding a tailor shop. Dressed in a camel-colored coat and monocle, the detective duo exchanges banter before charging out together, backs to each other. This narrative context infuses the track with a sense of camaraderie and roguish charm. The jacket art was illustrated by しきみ, and the music video was directed by コンノショウゴ. The song's title plays on the Japanese word "ライム" (raimu), which can be read as either "rhyme" or "lime", the lyrics deliberately pair it with "嘘" (lie), creating a pun that intertwines poetic rhyme with deception, fitting the detective motif.