Toaru Majutsu no Index: New Testament - Volume 4, Sub.18

High school student Mikoshiba Ryouma was summoned to a different world in the middle of a war. Sensing the malice from the one who summoned him (a summoner of the O’ltormea empire), he uses his martial arts to run away, killing important people of the empire during his escape. After the escape, he rescues two twin sisters from the hands of thieves. The sisters who can use magic, swear to serve him as subordinates. Thus, Ryouma begins his journey on the path of the supreme ruler.

[This is your typical story where there is a System of unknown origin given to mankind, and the existence of Towers, Dungeons, and Constellations, the known or unknown ‘Gods and Demons’ of humanity’s collection of myths.]

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— Ding!

[Astronomical Event!]

An event called 'Emergence of Races' struck the human world where the planet Earth was stretched out like dough causing it to become seven times its original diameter.

Various Towers and Dungeons sprouted out of nowhere that caused an earthquake that broke the seismic scale.

Billions of humans died in the process that crumbled human society in an instant.

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And just like that, Russell Moon reincarnated in the world of his-considered-failure unpublished novel [The Forgotten Swordsman of Ruined Star], sixteen (16) years before the beginning of the ‘Main Story’ which was set forty (40) years after the Emergence of Races.

And due to that very reason, the existence of 'Untouched and Unknown elements' came back to bite him!

'Why did I write that way?'

Russell Moon lamented.

When you get to the other world, you acquire new properties, there is no limit for your achievements and you become an overlord…Welcome to my world…

- Description from Novelupdates

When Linger was looking for a job, he applied for a bartender at a bar, but the guests who came here seemed strange.

What can a female warrior wearing very little, an armor that can’t even protect her eyesight, protect against?

How did the calamity mage who owed a hundred luck points survive until now?

Melancholic and lonely Skeletor, Skeleton? drink wine? Please don’t waste it!

The devil who likes the hero, since he is the devil, please do your job well, OK?

…

Well, he was getting used to these strange guests.

(Unknown Uncomfortable Sky: “Presenting Fine Wine for a Wonderful Different World”, “Sword and Magic and Beautiful Girls”, “Wine of Beautiful Girls”, “God-level Bartender of the Other World”, “I’m Really Not the God of Dionysus”)

- Description from novelbuddy