I hope Selena (it's so hard not to call her Celestine lol) drank it to make the fight more exiting, but she might have not considered him a threat at all and that's why she drank it? Also Rowan in the previous chapter being suddenly terrified of her is interesting, cause he observed her before...
Kouji buddy let's take a deep breath and not resort to killing the person you are trying to protect. Also Kudou I love you, you beautiful man, you are doing amazing, sweetie.
the situation between kaya and miyo is almost sad, cause they were both abused, but since kaya benefited from it she too became an abuser. Kinda reminds me of Akito from Fruits Basket being abused and in turn abusing the other cursed people, like what Akito's mother did was fucked up but a...
I hope that the next step for our favorite couple is for Miyo to call Kudou by his name, instead of Danna-sama (i know this can be used as husband but come on! the sheer intimacy!!). Also Kaya is such a fucking asshole, probably already planning how to steal her sister's fiance.