“Within two kilometres northwest of the castle. Looks like Caster doesn’t intend to go further into the forest.”

The bounded field expanded in the forest is a circle with a diameter of five kilometers and has the castle as its center. Caster’s location was at the edge of this bounded field.

If Caster goes any deeper towards the center of the bounded field, then Irisviel can support Saber in battle. However, as if Caster saw through Irisviel’s intentions, he started circling around the outside of the bounded field.

"Irisviel, the enemy is baiting us to come out.”

- Fate/Zero: Act 6, Part 1