Halfway(>∀<) is an original instrumental track by Blacklolita, first released on the artist's 2021 album of the same name. The song made its rhythm-game debut in maimai でらっくす FESTiVAL PLUS as part of the MEGAREX collaboration area (MEGAREXちほー), a limited-time event that brought multiple tracks from the MEGAREX music label into the arcade title. True to its kaomoji-laden title, the (>∀<) emoticon conveys a cheerful, lighthearted expression, the track is an upbeat electronic piece built around a driving 175 BPM groove, with bright synth leads and energetic percussion. Blacklolita, a well-known figure in the doujin and rhythm-game music scene, handles both composition and arrangement. The song has no vocal track, letting the synth melodies and rhythmic structure carry the energy. In-game, the MASTER chart was designed by アマリリス (amaryllis) and carries a difficulty constant of 13.7 with a dense 900-note count, placing it among the more demanding charts of its version. The EXPERT chart, designed by はっぴー (Happy), serves as a high-level warm-up at Lv 12.0 with 560 notes. A full combo on the EXPERT chart unlocks the in-game title (>∀<), referencing the song's own name.