In Demon Charmer, you find yourself unexpectedly entangled with a demon transforming you into a monster and sending you back in time. As you find yourself in this new era, you notice a remarkable resemblance to a character from the renowned "Demon Slayer" series. Adding to the intrigue, you encounter other characters from the same series. Is it mere imagination or a genuine phenomenon? Amidst navigating this unfamiliar landscape, you'll encounter twists in the series' storyline. Despite the uncertainties, your survival instincts push you to choose between a path of compassion, aiding both humans and demons, or one of tyranny, seeking dominance over them.