To be fair to Yujin, it really sucks to have guys assuming they get to own you because THEY think you're pretty. It's the Gaston problem. You don't get a choice; you're pretty, and you're a girl so it's not like you're a PERSON. I don't really blame her for being fucked up, tbh. It feels like a hollow victory and like she was just here to give the audience a character to hate. Instead I just find her a teeny bit relatable instead.
The painting you can kinda see on the wall behind Aogiri when he is examining Ichi is "Love and Pain" (popularly known as "Vampire") by Edvard Munch ٩(๑❛ᴗ❛๑)۶