The FL is so...I just want to give her a big, long hug. She's trying so hard while being so maladjusted, it's heartbreaking. She reminds me of Clara from Iruma-kun early on, when she was trying to give Iruma all sorts of things to get his "approval," except for Clara it's things, while for Sanako it's sexual contact...which is a really dark thing to consider.
The ML is an absolute king. He's got a lot going on himself -- and he certainly doesn't deserve to be sexually harassed like in the first two chapters -- but the way he is able to take action and apologize when he feels like he accidentally hurt her feelings is 10/10 best boy material. He's not just a straightlaced rules guy, he's smart and sensitive with a good heart.