The story of the male hero

Akira a boy who had a weird childhood because of the calamities there were no male other than him in the world his existence leaked through some of the countries other than Japan he was eventually Kidnapped by a group of people they were cruel to him but the he was blessed with a power that no body has in the world and he is trying his best to get strong to undo the all miss justice and save humanity from the demons from the gate and save his loved one's will he be able to do it?