Oldest Characters In Demon Slayer

I’ve noticed something fascinating about demons in Demon Slayer. Besides being incredibly strong, durable, and fast, they don’t seem to age. They stay looking exactly as they did when they first became demons. This makes them, without a doubt, the oldest characters in the series – especially the Twelve Kizuki, who are incredibly ancient. Though, even among Muzan’s most powerful demons, there’s a surprising range in how old they actually are.






