[Demon Slayer Crossover] Drink Up, and You're Mine

"Creature of the unnatural, vanish into the darkness." Beneath the crescent moon, in the mist, a man stood amid the thick snow, holding the demon-slaying blade Mimikirimaru. In the distance, red plum blossoms drifted down, and a man-eating demon perished beneath the hazy moon. Legend has it that the Demon Slayer Corps had a new recruit. By day, the newcomer was polite and refined, a true gentleman. By night, he became wild and unrestrained, leaving a trail of romantic entanglements. They say the newcomer was wildly ambitious, not only plotting to take the Corps leader's seat, but also brazenly declaring that he would bring all the demons under his command. They say that, while drunk, the newcomer blurted out that he wasn't a complete person. Wait! Not a complete person? The humans and demons seemed to understand something, and from then on, they became much kinder to him. "Drink this oath-taking wine, and you'll be mine." "I am the general of the Kanto Nura Clan, lord of the Night Parade of One Hundred Demons." Everyone, human and demon alike: "Yes, yes, you're right about everything. We're all yours, people and demons alike." One day, Muzan, who had summoned the Twelve Kizuki for a self-reflection meeting, looked at the few Kizuki present with a cold expression. He decided to wipe out the Kanto Nura Clan first. The current second-generation head, who was building up the Nura Clan in Edo, heard the news. "Did we recruit demons?" "Um... Boss, I think your great-grandson recruited them." PS: The protagonist was originally going to be Rikuo, but after thinking it over, Rikuo really is better suited to the Snow Woman. So I've decided to write an original protagonist, Rikuo's great-grandson, who has 11/16 yokai blood. PPS: The pairing is undecided for now. The protagonist won't drink an oath-taking wine with man-eating, evil demons. Theme: Righteousness