PROJECT A PROCEEDS has never been on a CS pop'n music release.
PROJECT A PROCEEDS'Nyami sprite and animations were later recycled and used for the sprite of Hong kong magic, with a new pallete (however, PROJECT A PROCEEDS' pallete is available as the 2P pallete).
PROJECT A PROCEEDS' Nyami pallete was not selectable anymore since pop'n music 19 TUNE STREET. However, it still appears as the rival character if the player chooses Hong kong magic's Nyami 1P pallete and plays Hong kong magic. This was fixed in pop'n music ラピストリア.
In the staff comments, wac mentions that the singer of the PROJECT A PROCEEDS cover is a Chinese restaurant cook. It is currently unknown if this is real or just a joke.
The singer of the original version is Jackie Chan.
PROJECT A PROCEEDS's charts were made by ucchie.
PROJECT A PROCEEDS is the only pop'n music license song to date that has lyrics in Chinese.