How Not to Summon a Demon Lord

From the introduction: Welcome to the world of Cross Reverie. This is a realm of swordsmen and sorcerers, elves and demons, magic and yeah okay you get the idea, it’s a pretty standard European fantasy setting. Like many worlds of this variety, Cross Reverie has a peculiar similarity to a video game of the same name played on Earth. In just a few minutes, an anti-social shut-in named Sakamoto Takuma will be summoned to this world with the body and stats of his game avatar and take up the role of the demon lord Diablo. Depending on your choices you might be joining him, or perhaps you’ll inhabit this world just like any of its other citizens.