She doesn't seem to really mind.

Added to pool Completely Unamused.

It's rather eerie to see her with an expression that chilly XD

If I was in his place, I would rub then soon stop. That look is just bone chilling. Especially from Okuu >~<

One of three things is happen here:

1. Okuu has no idea what the heck is going on here (not being familar with human's attraction to breasts).

2. The entire idea of sex is something that has to be put up with, kind of like a kid sitting through a dull class.

3. This is the expression she has shortly before killing someone who has just triggered a death flag.