Disclaimer, I don't own Fruits Basket!
A/N And here is the newly edited chapter one. I added a new chapter and more details to the story, so enjoy!
Once upon a time, God and his two friends, the Dragon and the Phoenix, decided to have a banquet. They invited twelve animals. The group had so much fun, they decided to do it again. Over time, the group became very close. So, God made a decision. He created a potion, and put it in the sake for the banquet without telling any of the others. When the banquet was over, he told his friends, expecting only their joy. Now they could be together forever, even when death ached to separate them. However, the Cat begged God to free him from this spell. "Everything has it's time, my friend, everything must die." Instead of listening to the Cat and granting him the freedom he wished, God decided to punish the Cat for speaking against him. Only one of the ones present had not drunk the sake, and that one was the Phoenix, who would already die and be reborn.
The original three friends were the last to die, the Dragon, God, and the Phoenix, and God still promised to see everyone again, even the Cat.