Sword Art Online was good but season 2 of Alicization up the gore with missing limbs and heads cut off not being unusual and it was on the last episode released up there with Attack on Titan for gore level on season 2 ep 5 was some harsh fighting scenes. If you haven't seen it yet then check out Alicization though the first season needed kind of to see what the plot is season 2 is far more exciting overall in action though the entire plot is setup in season 1. One part Kline shows up and I've been watching far to much SAO abridged "the parody" and I knew who it was immediately but the username Ballsdeep69 was the one that I thought of first from the abridged version. The guy who said before realizing they are trapped in the game "It's just a throw away username" but the funniest shit that sticks in your mind far after the fact it seems in my case.