Info on the "Special Ver" of MMP, Ibara, and Pink Sweets was posted by rtw in this thread a few months ago:
http://shmups.system11.org/viewtopic.php?f=1&t=29670&hilit=Ibara+SpecialHaving tested MMP Special Ver for awhile, I can add the following bits of info:
-You can do a quick restart by pressing the 1P and 2P start buttons at the same time during the game. This resets you to the title screen. You can do a hardware reboot by holding the 1P A+B+C buttons for 1-2 seconds, but the quick restart is a lot more convenient if you just want to restart a botched run
-You can save scores as normal when playing MMP, as long as you aren't playing stage select.
-You can select the stages for Manpuku mode by pressing UP-RIGHT (this starts you at stage 2 - you cannot practice stage 1). Press RIGHT once to practice each subsequent stage. It doesn't show you which stage you will practice, you have to listen to the chime each time you press RIGHT.
-You can select the stages for Harahara mode by pressing DOWN-RIGHT (this starts you at stage 2 - you cannot practice stage 1). Press RIGHT once to practice each subsequent stage. It doesn't show you which stage you will practice, you have to listen to the chime each time you press RIGHT.
Unfortunately, while it says "HARAHARA" on the top of the screen, you aren't actually playing HARAHARA mode, you are just playing regular mode. So this is pretty worthless.