
Can anyone explain the hairpins? When she got all of them does that mean she is their assistant also?

from an earlier of my comments.
"The hairpin is used by the recipitent to call out the give and they have a secret 'meeting' of course MC takes 'meeting' as escorting so she can go home but it was originally used for secret tryst."
His hair pin that he pulled off in ch 9, my guess it my be a family hairpin based on what his assistant acted since its 'His' hairpin that he 'hid' though in the LN I totally forgot about it since I wrote it off as MC did. might be a manga bonus or will end up in the 2nd arc.
I don't know why but I get annoyed when the MC always disregard what they first saw. Like when Tia obviously saw the maid running out of the room and the green haired kid's facial expression. Its just arghh! -_-