I can't check the menu for you right now. I take it you can't read Japanese? Maybe check a gamefaqs guide for translation?
My advice to you would be to stick with one character, and just play Gorgeous Mode over and over and over again. As I mentioned earlier in this thread(albeit not to you), you're going to be grinding for hours and hours, and what you want to do is S or A Rank the first couple levels, then just die and get a Game Over. You'll get some decent points along with a card each time.
It takes time, but this is all that is required.
Also, if I remember correctly, the more weapon cards you have, the more frequently the illustration cards will show up.