That’s Half-Minute Hero Second demo (not its evil step-brother, Half-Minute Hero second demo) — as in, the demo to the sequel of Half-Minute Hero that’s getting a longer-than-half-minute demo on PlayStation Network next month.
Originally scheduled to release in Japan on November 4th, Second was pushed back to an unannounced date sometime in 2011. To make up for the delay, Marvelous are releasing a demo on the 4th in its place.
The demo will let players experience about 40 minutes of the game, so they can accustom themselves to the battle system. Save data to the demo can then be transferred over to the retail game when it releases.
Half-Minute Hero Second will allow you to create and share maps and quests online when it releases.