Koharu

Akihiko Kayaba invented the first Virtual Reality MMORPG of the world and called it Swort Art Online. You met Kuharo during the Beta Tests and reunited with her after the official release of SAO. Kayaba then revealed his demonic plan to trap all players in his game. It is also revealed that, if you die in the game you'll die reallife too. The only way to leave the game is to reach the 100th floor of Aincrad, the world SAO takes place, and beat the final Boss. You and Kuharo are part of a task force to clear the game and save all people that are trapped inside.