Let out a contented noise, more than happy to take as much time as possible with this time. she keeps her hand gently, making damn sure to stay above the binder, or below it as best she could.
She thought for a second before pulling away and switching Haruka onto her back, kissing at her neck softly. "Love... I want to do something for you."
With that she moved to take it in her hand, stroking and pushing it against her as best she can whilst slowly moving her head closer down.
She's more than certain Haruka will know what she's going to do, and the anticipation may make her go insane.