Peerless Heroic Shadow

Two little boys and a little girl, whose parents were killed by evildoers when they were young, became beggars. They have seen the dangers of the world at a young age. Ten years later, three children from the past reappeared to slay demons, and the boy and girl counterattacked and became famous martial arts heroes all over the world. Who made them change their fate against nature? Who allowed them to transform into heroes renowned in the world...