The Survival of an Incompetent Villainous Prince.

Harold, the third prince of the kingdom of Dehavals, gazed at his reflection in the mirror and let out a sigh. This situation was only natural. After all, Harold had the unfortunate fate of being the most disliked character in the ill-fated role of the antagonist's sidekick in the romantic mobile RPG "Engage Hazard," a game he had played in his previous life. In this RPG, which played out like a romance novel, the ultimate objective was to "win over the most outstanding fiancée in the world." During the tutorial phase, Harold had abruptly broken his engagement with the Duke's daughter, only to challenge the main character. He had spent the rest of the game competing for the affections of various heroines, but in the end, he had remained a woeful secondary character. In the end he was fated to be executed without marrying any of the heroines. But not this time! Determined to survive, Harold planned to leverage his knowledge from his past life to become stronger. Instead of repeating his mistake of canceling his engagement with the Duke's daughter, he resolved to avoid the impending disastrous ending by immediately stepping away from the fiancée rivalry at the start of the main game. Above all else, in his previous life, this very Duke's daughter had his favorite character. Yet, little did Harold know that this Duke's daughter was not just stronger than any heroine; she was also more possessive and obsessed than any of them. (Source: Shousetsuka ni Narou, translated)