Kiddie porn or art?

[Blasted Child]

Ok, so recently this dude in Sweden was arrested and convicted for child pornography related crimes. His crime consisted of storing numerous image files of Japanese manga on his comp, and as we all know Japanese manga is largely about old men trying to peek under the panties of under-aged girls.
Well, I didn't really know that, but apparently it's at least one of the main genres of manga.

Additionally, this man translates Japanese comics for a living, and keeping the comics was necessary for his work.
All these mitigating factors considered, he was still convicted for having child pornographic material.

I personally don't have any respect or understanding at all for those kinds of comics - I find it all utterly tasteless, along with cosplay and furries and cat-girls and all the sexual deviences one might associate with it, but it made me think a bit:
What is the crime actually?

Normally a crime has a victim, but in this case the child in question is merely drawn, sprung from the perverted mind of a comic artist, and then read by other perverted men.

Thoughts?