Unanswered//butterfly: Sword Art Online

A mass multiplayer online game, SAO, becomes a lethal trap where death in the virtual world results in real-world death. Emirun and Rex, who knew each other before entering the game, meet again inside it and join a scouting group to learn survival. They encounter a dangerous player known as the Black Swordsman, who kills their entire group. Emirun finds Rex injured and the Black Swordsman responsible. Seeking justice, they seek help from Asuna, a skilled swordswoman, and train under her. As players turn against each other in this deadly game, Emirun and Rex face an uncertain future.