Kayneth flipped the tail of his coat and leapt down to the first floor. Then, Volumen Hydrargyrum removed its jellyfish shape and slowly fell down too.

"Ire: Sanctio!"

The mercury’s thin tentacles scattered after receiving his orders, and once again scanned through the entire first floor. The mercury immediately confirmed the location of the target. Approaching that location following the tracks of the tracing mercury, a sliver of a bloodthirsty smile emerged on Kayneth’s lips.

- Fate/Zero: Act 6, Part 4