Soundwave had a confused look on his face. Something about how she was sliding her hand on him felt sensual. Of course, he chalked that up to just the two of them being sex fiends in private. That thought process immedately made a turn when his cock was suddenly grasped in her hand, coaxing a rather cute moan out of him.

Soundwave became flustered again. For an entirely different reason. Face beet red in record time, and already his body was shivering from just her starting to stroke him. Had his body became more sensitive?

Soon enough, his sizable cock will be made visible under the skirt

"Y-Yukari. What... are you doing?" he asked, incredulous. "This wasn't the massage I, ngh... Had in mind"

Not that he hated this, of course. In fact, it was quite the opposite. He loved it, as he always did. It was why he didn't do anything to stop her. Though, he was actually surprise by this sudden but not unwelcoming development.