What is kayaba akihiko?

Kayaba Akihiko is a fictional character from the anime and light novel series Sword Art Online. He is the creator of the virtual reality MMORPG game called Sword Art Online, where players are trapped in the game and must fight their way through 100 floors to escape. Kayaba Akihiko is also known as Heathcliff, the leader of the game's strongest guild, Knights of the Blood. He is a genius programmer and engineer who created the NerveGear, a device that allows players to fully immerse themselves in the game. Kayaba Akihiko is a complex character, driven by his desire to create a perfect virtual world and his desire for players to experience true life and death situations, as well as his own tragic personal history.