Hippolyte did not normally excel in sensing presences. She was, however, sensitive to any that resembled the Noble Phantasm she wore — the war belt she had inherited from her father.
Polyte supposed that Alkeides was involved in a battle. She refocused and turned back to her horse. All the while gritting her teeth at the thought of the great hero she would one day have to settle things with — or rather, of the avenger he had sunk to.

Fate/Strange Fake: Volume 4, Chapter 12 ("Day 2, Morning")