Increases the spawn rate of "Kushi Mitama," demons that drop items that give the protagonist EXP, and "Ara Mitama," demons that drop items that give ally demons EXP.

*There is still a low chance of Mitama spawning even without this DLC.
*You can revert the spawn rate mid-game from the Options menu.

More details on the official game page of Mitama Dance of EXP ...