Unanswered//butterfly: Sword Art Online

世界首款完全潜行型VRMMO《刀剑神域》，简称SAO。本应是梦想成真的游戏，却变成了在虚拟世界死亡就意味着现实死亡的死亡游戏。 现实中曾相识的艾米伦与雷克斯在SAO中偶然重逢，加入侦察队学习如何在这残酷世界生存。然而某天，他们遭遇了被称为「黑色剑士」的神秘PK（玩家杀手）。艾米伦赶到时，只见雷克斯绝望地倒在地上，黑色剑士就站在一旁。将侦察队全灭的，正是黑色剑士。 为给同伴报仇，两人找到传说中的天才女剑士亚丝娜，在她的指导下展开严格训练。

AI 翻译译自 AniList 英文简介（在新窗口打开），仅供参考·显示原文

The world’s first full-dive VRMMO, Sword Art Online—known as SAO. What was meant to be a dream come true has instead transformed into a deadly game where dying in the virtual world means dying in reality. Emirun and Rex, who once knew each other in the real world, reunite by chance within SAO. They join a scouting party to learn how to survive in this unforgiving world. One day, however, they encounter a mysterious PK (Player Killer) known only as the Black Swordsman. When Emirun rushes to the scene, she finds Rex collapsed in despair, and the Black Swordsman standing over him. The one who wiped out their entire scouting party—was the Black Swordsman. Determined to avenge their fallen comrades, Emirun and Rex seek out the legendary prodigy swordswoman Asuna, and begin intense training under her guidance. In a death game where even players turn against one another, what new beginning will these two reach at the end of their struggle…?