yep something's happening with her hair
probably connected either to her magic or her life force something
edit:
nah probably just blood or the shading of the art lmao xd
though i can't really see the full color of her hair when she buns it like that
got more fanservice than i expected
1st maid clothes
2nd maids getting *wet*
3rd maids fighting as if they were body guards/ assassins (mei and nano combat)
4th hot rentarou on last page
she's annoying and so is the teacher
not even asking the witnesses first and just straight out "oy you come to the guidance office with me"
like man that's bs