Fate/Grand Order: birth of a Hero

I do not own any character of the fate franchise. --------------------------------------------------------------------------- the story will mostly follow the script of the game as its base however I will change it in many points due to my choice of summoned servants (mostly allies). in addition I will change certain events like Olga's death in Singularity F. thank you for your patience and have a good day. --------------------------------------------------------------------------- p.s.: the story will have a harem