C459 Kill Himself
Speaking of which, actually, everything has been very clear.
Princess Elyse and Cossonzo had an affair. Cossonzo came from a marquis family and was not worthy of a princess. When the king decided to choose a husband for Princess Elyse, or rather, find a marriage partner for the royal family, it was not Cossonzo's turn at all, so they could only have an underground relationship