let's talk about which demon killed the most humans in the Demon Slayer series I'll start with aaza holding the number three spot as he killed almost 6,000 to 7,000 people this number is actually pretty high because aaza only kills men which makes it even scarier in the number two spot is muan who killed nearly 10,000 people some might wonder why the main villain is in the second spot the reason is simple muan never wanted to kill people without a reason and he even lived like a normal human so that he could blend into society the
highest number of humans were killed by kokushibo who killed around 20,000 people this is insane considering Koko's age he might have killed more than one person every single day which explains how he became so much stronger than the others
