the story is that p&s is that they weren't allowed in heaven because they were so lewd. So...they must collect enough heaven coins by defeating ghost to get into heaven. This is just a revised version of the ending in the anime.
a highly recommended anime series, if you havent seen it go here:
This was done as mere practice to see what i can do and how well it turn out. I wasn't expecting something incredibly good, just something someone can enjoy and tell me how I did thx for all the feedback, this is why love newgrounds.