With the Black Swordsman appearing in the world of exorcists and demons under mysterious circumstances after a decisive battle, some events might not go as they were supposed to. Perhaps becoming an exorcist himself and collaborating with a certain black-haired nephilim and his friends will help him get back to his world... SAO and Ao no Exorcist crossover. Mixed anime/manga canon

With The Black Swordsman appearing in the world of demons and exorcists under mysterious circumstances, some events might go a little bit differently than they were supposed to be. Sword Art Online and Ao no Exorcist crossover story

Like other ordinary people, Kazuto Kirigaya just couldn't wait for SAO's release. However, 10000 people including him could not log out of the game and now have to beat all 100 floors of Aincrad while avoiding death. Now, along with his newfound companions and two oddly familiar people, he has to prove his will to survive and end the death game. Possibly an AU