Regis, an incapable soldier, who is bad at both sword and archery that only reads books. He meets a girl at the remote region where he was transferred to. Red hair crimson eyes princess Altina who wields the supreme ruler’s sword. She was appointed to become the commander of the army of the remote region despite being fourteen years old, simply for being the illegitimate child of the Emperor. However, she is holding onto her big dream without being depressed in the environment she is in. “I trust you”. Regis who was sought from her as a tactician stands up to the obstacles together with her. The military fantasy interweaved by the bibliophagic boy and the princess with the supreme ruler’s sword.

(Source: Baka-Tsuki)

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist, “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

However, the peculiar ability {Magic Reflection} was invoked! The ones that were turned to slaves were the girls! Takuma was bewildered. He’s the strongest magician but, he doesn’t have any communication skills. Panicking, the first words that came out were the ones that he used inside the game role playing the Demon King!? “I’m amazing you say? Of course I am. I am Diablo… The one feared as the Demon King!”

This is the story the Demon King (acting) that would soon inspire the world and his other world adventure that he plunges through with his absolute strength, raise the curtain!