OutofPrintArchive, This is probably old news to most, but I completely forgot about this one!
Most of M2 ShotTrigger releases have seen a physical release, either on PS4 or Switch, but Mahou Daisakusen/Sorcer Striker was only ever digital on the Japanese PSN store.http://www.hardcoregaming101.net/mahou-daisakusen/
I just grabbed a 5000Yen card from Play Asia and bought it with my Japanese account.
https://store.playstation.com/ja-jp/product/JP0092-CUSA09063_00-MAHOUDAISAKUSPS4