I Decided to Abandon the Traitors Who Planned to Use and Dispose of Me, the Hero, at the Last Moment.

Every member of the hero’s party, including my childhood sweetheart, had been seduced by that tr*shy prince!! —So, right at the critical moment when victory against the Demon Lord was certain, I flipped the script and got my sweet revenge on them, lololol. What? The revived Demon Lord’s army is attacking the kingdom? And without me, the hero, it’s just going to be a one-sided massacre? Not my problem!!! Is there some insurance you can buy at this point? Yeah, right, lol. So, go ahead and die already.