To unlock the last 5 pictures of ''Gallery Mode'', enter ''Gallery Mode'', go down to ''Gallery 19'', and enter it. Go to number 224 (this picture does not have to be unlocked to work), and go up twice, down twice, left, right, left, right, and exit (press X) Gallery 19, and then enter it again (press O), and there should be a confirmed sound, like the coin sound in the arcade, and the last four pictures of Gallery 19 should be unlocked, containing BeForU pictures.