I think I know what you mean. Wokada's Miku is sadistic and dominating, but in a caring and nurturing kind of way.
Well, the girl has to vent all the bullying she suffers at hands of Wokada. I bet if she didn't suffer all that abuse, probably she would be really sweet with Len
BTW, I had no idea we have a Lovely Femdom pool O_ô