Why not both?

Naruto grinned as he got up, making Tsunade whine as his hands came off her tits as a result.

He then turned to Shizune as he made a Shadow Clone, who quickly straddled Tsunade's torso, and began to fuck her tits, much to her delight as she squeezed them together. Naruto couldn't help but chuckle at just how much the Note had made Tsunade so sexual. She was usually a bad tempered but proper Hokage, but now, she was so happy to give him titfucks...

He then turned to Shizune, who smiled and presented her body to display he could do as he wished with it.

He looked around and spotted a nearby couch, which Tsunade had probably put to relax after all that paperwork, and grinned. "Shizune, get on that couch backwards, with your knees on the cushions and hands on the back part."

Shizune grinned and eagerly went to do as he requested, and once in position, she looked back at him as she shook her ass to entice him.