I Tried Proposing to the Villainess Whose Engagement Was Broken Off Because Her Inner Monologue Was Amusing [Short Story Version]

Kyle, who can hear the voices of people's hearts, had shut himself away in the darkness of loneliness. His only salvation was the existence of his half-brother, the First Prince, whose inner voice was sincere and warm. When Kyle heads to a three-nation exchange conference under the guise of diplomacy (searching for a fiancée), a public engagement annulment by the Second Prince of a neighboring country occurs right before his eyes. Grace, who has been jilted, is a noble lady who doesn't change her expression. However, when Kyle listens to her inner voice, he hears something completely unexpected.