PQube have announced that a Western release of Omega Labyrinth Z has been cancelled. Based on their message, it sounds like Sony themselves had something to do with the game not happening as the game was scheduled for release on PS Vita and Playstation 4.
You can view their brief message down below:
PQube strives to release Japanese content for its fans as close to the source material as possible. In the case of Omega Labyrinth Z, while PQube has worked with all relevant age rating bodies in their respective territories, PQube must respectfully comply with the wishes of the platform holder and have therefore withdrawn any future plans for Omega Labyrinth Z’s European and North American release on PS4 and PS Vita.
It’s worth noting that the game has been banned from being sold in Ireland, Germany, Australia, New Zealand, and the United Kingdom.