Nippon Ichi has plans for Prier and Paprica post La Pucelle: Ragnarok. The enhanced PSP port comes out next Thursday in Japan. After launch, Nippon Ichi will release downloadable cameo characters. No surprise there.
Later, perhaps much later, there will be another La Pucelle game and one more after that. Dengeki Online’s La Pucelle: Ragnarok blowout mentions this game is the first in a trilogy. Unfortunately, there aren’t any details about the other two games. So, we’ll leave it to you to imagine the sequel and threequel possibilities.