The Vengeful Deity's Chosen Hero

William was left in front of the orphanage gates when he was only a new born child. The orphanage's nun found him inside a basket , a red ruby with image of a mighty black dragon raping itself around a red black colour sword image was drawn on it. There were some trails of blood and foot prints outside the orphanage gates but no dead body found. The nun assumed that some people where chasing after the person who left this baby here. and that person was heavily wounded by their chasers and to protected this child they must have gone somewhere else to confuse their chasers. The nun who was the caretaker of the orphanage had taken William under her and was taking care of William with other children at orphanage. The orphanage was sponsored by the baron of the city Manalo but due to corruption, the money received by the orphanage was very little, even then the nun was somehow managing the orphanage by treating sick people with her holy magic and sometimes she also do home visits. The nun was a 30 year's old kind lady who had given up her priestess position in church and came to this orphanage to take care of the children's because she wanted to feel the blessing of becoming a mother as she never had her own child because churches never permits marriage of any priest or priestess, as to use holy magic the one has to have a pure body and have affinity of holy magic. There are holy knights who also have to follow this rule to use their holy powers but there are some exceptions such as heroes. Yes, here in this world we have heroes and people also uses magic and healing magic is only can be performed by the priests and holy knights but there are some special ones who can also heal them self's and hold strong powers given by the gods and we call them Heroes or Gods chosen one and here in this world, we have 12 heroes chosen by the 12 different gods and each god has a Empire who believes and offer there prayers to them and in retune the god chose a person among the people of their Emperies and give powers to that person to fight against the invaders of other world which also have 12 demon gods who send their champions to conquer this was going on from 10,000 years and after every 1000 years Gods choses their Heroes. The hero selection ends after 18 years from its starts , a very large bell rang when the selection starts and there are total 12 bells had been placed at every head church of the 12 Gods these bells are called world announcers because when even a single bell ranges its sound can be heard to the every corner of the world. The bells 2 times simultaneously after every 1000 years first time all the bells rang simultaneously to inform everyone of starting of the selections of heroes and every person who born on this year already become a hero candidate second time it rang simultaneously when the selection was over it happens after 18 years from the first bell rang and in between the bell rang when a god chosen a hero but this time only a single bell rang came out from the respective god's head church and the head priestess or priest can hear the name of the chosen hero and their location and to confirms the chosen hero's identity the priests/priestess asks the hero to show their stigma on their body which is given by the gods to their chosen heroes and the priest or priestess can also confirm it if the hero can also activates the holy weapon or not. the holy weapons are passed down from generation to generation to heroes and these weapons' are given to the holy priest or priestess who haves the responsibility to keep it safe in the meantime until the next owner of the weapon chosen. The names of chosen heroes and their where about are kept hidden by the head church from other empires and also from the other god's churches.