Regardless of whether one were a hardened brave or an incorruptible gentleman, as long as it is a man, he would be slayed (metaphorically) by Stheno. It is the most powerful of whispers, filled with expressions of love. Her faint melancholic gaze turning to blades, her mellifluous voice dripping with poison. And after that comes the killing blow - as though dropping all pretenses, she strikes an adorable pose. Making a heart symbol with her fingers - a perfect finish!
Most men would fall to such an attack, though in the event one did not, she would become very cross (but do little else).
- ↑ 1.0 1.1 1.2 Fate/Grand Order material II: section on Stheno's Smile of the Stheno Noble Phantasm, translated by RanonCap at Beast's Lair.