Originally, Fang Zheng thought that the World Tree of a Thousand Realms would have some doubts about his proposal, but to his surprise, after Fiore had thought for a moment, she agreed to Fang Zheng's request.
In fact, the World Tree of a Thousand Realms truly had no choice. Just as Fiore said, up to this point, for this Holy Grail War, the World Tree of a Thousand Realms had risked everything. If they were to fail, then the end would be disbandment and separation. To avoid this outcome, they were willing to do anything.
Moreover, once Fang Zheng really obtained the Holy Grail, he would become a mage who mastered the Third Magic, and the support of a mage was naturally something the World Tree of a Thousand Realms clan would desperately want.
