As someone very familiar with the Otaku-culture, Amanokawa Makoto finds himself reincarnated in the extremely popular VRMMORPG—titled Grand Saga— as the penultimate last boss character, the dystopian ruler Emperor Wilthelm VII, several years before the game's lore had started. Naturally wanting to avoid his terrible fate and knowing the truth that he was a mere puppet of the real antagonist, he utilized his in-game knowledge of the lore, changed the fate of others, and trained like a maniac...and succeeded! He has defeated the true villain and changed his reincarnation fate. All before the game even began. Now he can finally relax, right?

Well, it turns out that he still has to deal with the aftermath of changing the lore of the game. Not to mention his character is the monarch of a massive nation that needs rebuilding. However, Will is not perturbed nor daunted. He utilizes his knowledge of both his past life and in-game lore to guide the nation to a brighter future. Though what Will wants is to finally enjoy the game world that has become his reality. But Will soon realizes that this world isn't limited to the game of Grand Saga.

What's more...he's not the only one.