Re-reading some chapters, she seemed to weirdly look out for him like when she called Karin but didn't tell her that her husband had lied about being home. Only thing I don't understand is how she would know FL's past/identity.. (I guess she was stalking her for a while to dig into it) nor why she is also trying to help Karin if she does have a crush on Kippei.. (I considered her idolizing their marriage or prioritising his reputation over her feelings..) I pray I'm wrong because no way a married man with a reputation of cheating praises you ONCE and your willing to go that far to "protect" him

Ohhhh, please don't tell me the blackmailer is the coworker Kippei was on total BS with his whole "lOoKs DoN't MaTtEr," despite cheating on both his wives.