Last year was great for Otakus as tons of amazing anime started but not all of them were as good as others were, among them were these 9 anime which are totally not safe for kids and you would never like your parents to know that you watch these.
9. Attack on Titan: Junior High
Titans only steals your lunch boxes and eat them! ^_^
8. Valkyrie Drive: Mermaid
If you combine Soul Eater + Seikon No Qwaser + Hentai then Valkyrie Drive is what you get.