The game is originally Japanese and Nutaku wasn't doing any work on it other than translating it to English, and thus it was 100% censored. I'm guessing they eventually hired an artist or 2 to make new cards like Silly Girl and also started having them go over existing cards to de-censor them.
However, because most of the content is still coming from the Japanese version of the game. Almost all newly added stuff is censored.

Ok makes sense thanks

Bumping this thread because of the Gatcha update.

Update:
Nanoka Murasame, MOE