In this game the endings you get are all
with the princes, or the pictures in which you beat Uz and Cube for each
girl. Olive has a very special ending with Cube.
Something you should know is that there IS a gallery,
but you have to go to the Options screen before turning the game off and save
there for some reason, otherwise it won't remember them. But just being able
to get the Cube ending makes it worth it! ;)