The world first’s VRMMO 《Blade Online》service begun, around 30 thousand players started to play. What awaits to those players is a death game which is... more>> impossible to logout from. Though hikikomori youth, Akatsuki, is one of the players who set out to conquer the death game, he was deserted by his companion because of using a failure weapon. Furthermore, being transferred to an area where high-level monsters dominate due to a bug and ――!?
High school student Amatsuki Iori was summoned to a different world to fight as a brave of salvation, but whilst he was trying to save the world, he ends up being killed by the companions whom he wholeheartly believed in.... more>>
It was then, when Iori thought that he already died, he came to his senses only to find that he was re-summoned to the same world, but in the future.
Back again as a brave to subjugate the demon king which his former self had failed to defeat previously...
Then, he noticed, that among the guys who ordered him to fight as a brave, the figure of one of his former comrades could be seen.
「……I will make you regret having betrayed me.」
A girl then appears before him as he is consumed by hatred, but not any ordinary girl - she is the former demon king who is also aiming to take revenge.
The brave man who abandoned his heroic ideals, exchanging them for a burning desire to take revenge and the former demon king who seems ready to join him in his new-found quest.