Murciélago

On her record, Kuroko Koumori has seven hundred and fifteen kills. Most people in that situation end up executed, but Kuroko proves she's still sane enough to be useful, so the government puts her to work instead. She's now a State-Appointed Executioner, hunting down criminals too dangerous or too weird for regular law enforcement to handle. Her partner is Hinako, a cheerful girl who treats physics as more of a suggestion than a rule, especially behind the wheel of a Ferrari. Together they take on cases that sit somewhere between grim crime thriller and total chaos. The tone is hard to pin down at first: it's genuinely violent and doesn't shy away from that, but it also has a dark, dry humor running underneath everything that keeps it from feeling purely grim. Kuroko herself is a big part of that balance. She's an unrepentant predator who also happens to be openly, aggressively interested in women, which gives the whole show a strange, entertaining energy. If you liked Black Lagoon's morally untethered action or the brutal edge of Elfen Lied, this sits in that same uncomfortable-but-compelling space. Fans of Psycho-Pass might also appreciate the premise: using killers to catch killers, though Murciélago is considerably less interested in philosophy and considerably more interested in carnage. It's a Seinen action series with Girls Love at its core, and that combination is rarer than it should be.