fate grand order react to other Worlds

The Chaldea Security Organization, the secret agency founded for the purpose of preventing the "certain extinction" of the human race. Specialized in dealing with temporal anomalies and other existential threats to humanity, are faced with the discovery of new worlds outside of their own by the work of the Renaissance Genius, Leonardo Da Vinci in an experiment with SHEBA, finding new worlds that are outside of their own rules and laws with each world having its own unique history, rules and conjecture that are outside of its own multiverse.