TO THE FUTURE: Kou's Otherworldy Adventure!

Countless years have passed since the end of the Great Tenma War. The nations of the Cardinal World are prospering; both magical and technological and political and cultural progress is being made, and war is far more rare than it was before the Great War.

After years of progress, the nations declared that cardinal world is not enough to sustain the continuous rise of population and decided that they should conquer the stars to sustain the growing population, thus the Space Odyssey, which was led by the greatest countries in cardinal world: The Jura Tempest, Empire, Milim's Domain, Sarion, Dwargon, Ruberion, and Farmenas.

...

A million years have passed since the event that led to the inhabitants of the cardinal world ruling the cosmos, which was called the New Expanse; the countries are still at peace and have made high progress; and the demon lords, gods, and heroes of olds are things of the past. The said weapons and paintings that depict the mythical beings and events are displayed in a museum.

The Great Tenma War is inscribed in the religions and history books. But little did they know that Demon Lords, Gods, and Heroes were in the shadow of peace and progress, waiting for the time to stop anyone who dared interrupt the peace and progress of the world they loved.

Kou Suzuki, our protagonist, and his classmates died in a nuclear explosion. He and his classmate will reincarnate into cardinal world and learn its history, progress, myths, and other exciting things!

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A/N: Our protagonist is not OP because I'm going to focus on the lore of this world rather than fighting, but I'm going to give him and his classmate a unique skill each.

Anyway! Enjoy it and recommend some stories, idea, and lore that we can add to this fanfic!

[DISCLAIMER]
The Tensura story is not mine! It belongs to its author, Fuze.