This is maybe the most magical girl media I have seen.
Story spoilers
World-ending existential angst completely overturned by indomitable, (essentially-)baseless positivity (they didn't know it would work until it did).The MP replenishment mechanic was innovative. Made the task an active player action rather than the typical passive interruption of waiting for it to replenish itself.
Bugs: On one game, after the first flashback scene, the classroom background remained and I could not play further. On a different play, all controls became unresponsive after unpausing. I had to restart in both instances. Finished the game with no other issues.