Will work on the translation later when I have time, unless someone else wants to do it. To note, the Persona series uses Light and Dark for Hama and Mudo skills, respectively, rather than Expel and Curse found in the main Shin Megami Tensei games.
How can it absorb dark? It doesn't technically do damage... And being weak to the element it uses would suck. :< (Though I know some are like that if I remember correctly.)