Speaking with a representative from NIS America, Siliconera learned certain unvoiced scenes from the Japanese version will have voice acting in the English version of Disgaea 4: A Promise Unforgotten.
We can also confirm the localized version will retain the anime cameo characters for Omega tier spells. Index from A Certain Magical Index appears when a cleric casts Omega Heal. Holo from Spice & Wolf is summoned when you cast Omega Wind. Bikkuriman arrive when a mage casts Omega Star. Meito Anizawa from Anime Tencho heats up the battlefield when someone casts Omega Fire. Lotte or Astarotte from Lotte no Omocha! freezes enemies with Omega Ice.
How did all of these cameos get into Disgaea 4? Nippon Ichi’s president Souhei Niikawa told me it’s because he’s friends with the creators.
Disgaea 4: A Promise Unforgotten is slated for release on September 6.