There are just cute figures...

Sure, on the surface, but in reality they're promotions of a show that supports underage sexual content and incest. If I were to where a shirt with pills and needles printed on with children celebrating around them - you could say that I'm simply supporting the idea of children having access to life saving medicine, but if it's actually from some TV show that is all about promoting drug abuse among minors... probably not something you want to wear to work.

As I explained in my other reply to you - passively promoting/supporting the idea that underage sex and incest (even if fictional) is acceptable can be viewed as damaging to society. While I don't find it to be personally, I understand how a lot of people can feel that way and I agree that it's too controversial to allow in a work environment.