Alpha no Chouinshiki

Oscar, an Alpha, was raised as the crown prince of Galguard and has grown to be both handsome and refined. For some reason, he is to conduct a signing ceremony alone with Prime Minister Legrand of the allied nation. The moment Oscar confronts Prime Minister Legrand, his body suddenly goes into "heat" simulating that of an Omega, even though he's supposed to be an Alpha.

Could Prime Minister Legrand actually be the "Supreme Alpha" who is said to be the only one in a hundred years to cause even an Alpha to go into heat...?

(Source: Media Soft, translated)