Okey, this is great. We have a good beginning, the two main protagonist make a good pairing (an Ojou-Sama and a masochist) and I'm looking forward to the next chapters BUT why didn't the author make the MC a lesbian ! When Claire ask her if she is of the other side she should have answered "Yes, so what ?" and continue her dialogue with Claire.
It could have explained even more why she like her so munch and not only " I'm a masochist and I want a blonde Ojou-Sama to bully me". And it wouldn't go against the establish character (even lesbian play Otome games). It's a shame that in a yuri manga, originally a light novel, they don't use the word lesbian or confirm the sexuality of the main character.
Come on it's a yuri manga, girls loving girls. It's about time to banalize the word lesbian on yuri manga, light novel, etc ...
I could also add the fact that Claire is clearly heterosexual and at the end of the story she will, maybe (I didn't read the novel), become gay ONLY for Rei. Ok yuri manga ...