Changeling the Elfin Swordsman

Beast Boy is gifted a NerveGear and a copy of SAO for helping save Tokyo. When he discovers the dark twist, he knows he needs to save as many people as possible. To do this, he plans on becoming the strongest person in the game, soloing bosses so that no one needs to risk themselves. Along the way, he makes new friends and even gets a title: the Elfin Swordsman.