Jupin

Jupin has been part of Pump It Up PHOENIX since its launch versions and was Sobrem's first contribution to the series. The composer was already known for writing boss songs in other commercial rhythm games, such as Daphnis (CHUNITHM SUN) and DIE IN (a collaboration with TAK for DJMAX RESPECT V). That pedigree shows: among the Ver.1.0 debuts, Jupin carried the most difficult charts in both Single and Double. At 173 BPM the song offers few breathers and leans hard on its streams, making it a clear stamina song.

Rather than a plain visualizer, the BGA (by FuseBox) tells a story. At a mansion during an engagement party, a mysterious poisoning takes place, and detective Jupin must identify the culprit among the guests. The narrative unfolds through clues, an out-of-place pendant and one guest's suspicious absence, before Jupin names the killer. It stands out as one of the more memorable narrative BGAs in the catalog.

The Arcade charts (by DulKi) are Single S12, S17, S19, S21, S23 and Double D14, D18, D23, D25. The S12 is a well-known overrated-for-its-level chart: at 173 BPM it demands a lot of twist (틀기) technique. The D25 and S23 drew criticism for forced runs and a near-total lack of rest; by contrast the D23 was re-evaluated more kindly over time, thanks to sections where stamina can be conserved. The Short Cut, added a year later, has its own charts by SPHAM: Single S12, S13, S14, S21, S22, S23 and Double D16, D19, D20, D23, D24.

Jupin also appeared in Chrono Circle, ported in via the final update before that game's service ended on December 14, 2023.