Well I guess it's character development but sometimes I miss the stay at home very shy and insecure Mahiro chapters.
I still like all the characters and stuff but the vibes of the manga shifted quite a lot.
I Really like this chapter finally it's going her way.
My 2 leading ideas are she is only a half sister and the family tries to hide it or pink hair is considered "cursed" or something like that.
But honestly I hope it's something else.
I like this as a setting so far.
Using premium magic water to wash with is a bit wasteful, rain water would do just fine but I guess they needed her to pass out for plot reasons.