Some of our fans noticed that Project Nimbus: Code Mirai (the PS4 version) has vanished from the US and European onlines stores.
We really tried to avoid doing this, but it turned out to be a necessary step in getting the second half of the game (and the combined Complete Edition) for sale on the overseas stores.
Rest assured that the game will reappear in a few weeks, along with Rise Mirai and the combined Complete Edition! We're very sorry for the inconvenience!
--Team Tomo