Yeah finding a category that my pictures are mostly about will be a challenge. But to put it simply it would be fandoms generally. And technically that'd be a category. A various one but a category nonetheless.
They are mainly pictures of animé and famous shows ou actors, haha. For example; Supernatural, Jensen Ackles, Logan Lerman, One Direction, Louis Tomlinson, Ariana Grande, Fairy Tail, Zero no Tsukaima, My Little Monster and screenshots from tumblr, haha. That's a long list, sorry.