Kischur Zelretch Schweinorg was bord until he heard about the Yggdmillennia and the greater grail and he had an idea what if he added two more factions with spirits from the 4th and 5th holy grail wars as the two factions then he thought of the right person for the job his son (Y/N) Zelretch Schweinorg will be a master of most of the servants of the two factions, what will happen when the son of the vampire joins the war, who will be reunited with who, and what will happen when some of the servants and mages Catches there eyes on him.