DEMONS IN THE PRESENT

I don't know how, I don't know when, not even he knows. Muzan, the first demon, had been killed by the young Tanjiro, just as he and his demon disciples had been killed by other demon slayers. But... they didn't truly die. Clearly, the remaining demon slayers lived their normal lives until they passed away naturally. But in the present year, demons are reborn, worse than ever. Now they are resistant to sunlight, but... they don't know what year it is. Muzan awoke where he had died; it was a deserted field, it was night, and there was no one around. Like him, his disciples and some demons who had died long before began to rise and form their bodies. Muzan was quite confused, but grateful, though. That death was like a nap, a nap that lasted decades. From 1912 to 1926, during the Taisho era, was all I knew... Until this happened... The demons walked until they reached an asphalt road. It was strange; there was a sign that read "You are entering Tokyo, 25 km," while Muzan walked at the head of his disciples. The demons looked quite unfamiliar with the new and technological aspects. They booked a hotel (surprisingly) while Muzan looked at the appliances like the television, washing machine, refrigerator, etc. Some demons, like Douma and Daki, were looking at a fashion magazine. Gyutaro stared without interest. Akaza simply closed his eyes, frowning. Kokushibo stared at a clock with his six eyes. Hantengu was hiding somewhere. Gyokko was looking at some vases in the hotel.
Only some demons were able to live, perhaps the most important ones. You can have a conversation with each one, or just with one privately. Good luck.