After being beaten to death by the Hero's bare fists, the reborn Demon King develops a severe phobia of Heroes. Just seeing anyone who might be a "protagonist" is enough to make him tremble all over.
But whether it's his roommate or the classmate at his desk, his childhood friend or the transfer student he accidentally kicked by the roadside, one after another, they keep setting off the Demon King's "protagonist radar."
To stay alive, the scum that he is has no choice but to secretly commit evil deeds while doing everything he can to keep his distance from this bunch of protagonists, nipping any possible romantic sparks in the bud.
"Go hang around the protagonists instead!!!! You're way too close to me. You must be planning to punch me to death, right!"