Ash, a young boy with apparent past-life memories, sets out to revolutionize the world in order to rebuild civilization and create his ideal life! Together with his friend Maika, they aim to develop their new world starting with a village!

Sansui Shirokiro is one of the Immortals. When a baby falls into his forest, he's exiled to the fast-paced mortal world. Now, everyone's about to find out how good even the worst swordsman can get with half a millennium of practice behind him!

Ryoma, an ordinary high-schooler adept at martial arts, one day finds himself summoned to another world. Slaying his vile captors, he is on the run when he encounters two girls who will change both his fate and the fate of the continent.