He was a military general who died in war and reincarnated into this world.
At first he didn't believe it but eventually he had to accept it.
He was reincarnated into a noble family in this world and was named Kael Varentis, the young heir of the house of Varentis.
When he opened his eyes everything was shocking to him, his hands felt very small and he was feeling feeling weak. He was taken into hands of a couple and both of them were smiling at him. Then he realised that he was reincarnated, he never believed in such things but now he knew that they are really true.
Within 1 year he started to walk and speak properly, he was able to learn everything faster than most and he started swordsmanship at 2 years of age, people started to think that he is a 'Genius' and many started to even call him a "Prodigy". When he reached the age of three, at the year 352 according to the human calendar a war between humans and demi humans started. After that he learned that there were different species in this world and they were good at different fields. Elves were good at archery, beautiful and very caring about their homeland. Dwarfs were master craftsmen and are rare to be found in public. Demi humans had their own abilities like better senses than others yet bullied by humans. Humans were good at keeping order and dominating in the region. Monsters were almost mindless and they are the easiest target yet very strong to be defeated without loss. Dark elves were great assasins with most stealthy abilities than any other species and so on....
He was very surprised to know all these at first but he got used to it. He also learned that this world still has slavery and most of the species are not at good terms with each other but many people didn't wanted a war to break but it was also impossible to ignore it so it started.
To be continued.....