Who says Yuko was the dominant pair in the relationship? AtsuYuu, Atsuko x Yuko, Seme x Uke.
Atsuko :"Yuko, omedetou~"
Yuko :"Acchan... wait..."
Atsuko :"Hm? What's wrong Yuko?"
Yuko :"Where... are you... touching...?"
Atsuko :"Eh? You know where I'm touching~"
Yuko :"Ahn~"
Atsuko :"Yeah, I like Yuko's moan the best~"