A while ago Idea Factory released a Hyperdimension Neptunia Victory II theme on the Japanese PSN, but looks like there’s more.
Today the developer launched a second theme, which can be found here. The new theme costs 280 yen ($2.35).
As usual, remember that you have to use a Japanese account or an incognito window to see the link above, or at least to log out of your western account. You can find a handy guide on how to create a Japanese PSN account here.
If you want to check out how the theme look, you can find two screenshots above and below.