Makai Kingdom is coming to PSP on September 22. The portable version, Makai Kingdom Portable, has a new scenario called "Papa is the Strongest Demon King" and extra characters such as this unnamed girl.
As a bonus, Nippon Ichi is also reprinting limited edition goods. The Makai Kingdom Portable limited edition includes a reprint of an art book and the game’s soundtrack for 7,140 yen ($88). A standalone game runs for 5,040 yen ($62) or 4,000 yen ($50) on the PlayStation Store.