Hibiki is very naive. Why would the hyumans make the demons their slave? It's a battle between 2 species, the end would be the eradication of the loser not the slavery of them.
The heroines of this arc has assembled. I really like how the author portrays cid. He's a real manchild so it's always funny to see how he actually thinks
@Azupiela only muzan can kill other demons. Well he doesn't technically kill them more like either force his cells in other demons to continue to multiply until they self destruct or absorbs the d2mon
So the demon to human drug is still in effect. Looking at nezuko's state now. It took like 12 hour ish for her to turn from full demon to half human. So maybe muzan is still weakening from the turn into human drug not just from the aging drug
If i were him i would asked for a change of deal. Rather than just an extension of the debt deadline i would asked for the debt to be completely anuled
This is not possible in real life. Usually famale teachers are the one who'll yake the measurements for girls. It's imposible for a male teacher to do that, even mire so when the students are in the 5th or 6th grade where they are in their puberty