We Do Not Do Mutual Non-Aggression

Hyeonwol, whose courtesy name is Gyeonghui, is reincarnated as the eldest legitimate son of an imperial family in another world, retaining the memories of his modern life.

After becoming a peerless emperor and leading his nation into an era of peace and prosperity, he is suddenly killed by Seol Cheon-yu, the Heavenly Demon (Cheonma)—the very protagonist of this world whose existence he was unaware of. Regretting that he realized this world was the setting of a novel far too late, he believed that was the end for a supporting character like him. But then… Hyeonwol opens his eyes, having regressed to his 20-year-old self, back when he was still the Crown Prince.

Faced with this second chance, his entire goal in life is turned upside down. To avoid being killed by the protagonist again, he decides to resolutely side with him!

However, putting aside the fact that his plan for a peaceful life starts to falter from the very beginning due to the trauma of his death, the attitude of the protagonist he reunites with is… strangely off.

“Would you be willing to buy me some candy once every three days?”

He’s absolutely certain this wasn’t his personality in the original novel. What is wrong with you?