Anime all too often sucks because it’s too much about sneaking soft-core porn into an adventure story.
Mind you, adventure fiction has had a huge porn component for a long, long time. Gothic fiction was pretty close to bodice-ripper porn even before King Solomon’s Mines invented modern adventure fiction, and once R. E. Howard started writing, it was pretty much heaving bosoms and mighty thews all around.
So I won’t complain that adventure fiction USED to be pure and non-sexual. That was true only for a small subset written by guys like Rudyard Kipling and Arthur Conan Doyle.
The second season of Durarara jumped the shark by putting a threesome romance into the main story.
That’s soft-core porn territory; at that point, the action-adventure fights are just a distraction.
But shows like Durarara require me to care about the characters. The whole point of a character like Anri is that she’s supposed to have tragic feelings and a deep need for meaningful love that the male hero has a chance to satisfy.