That's she's his lover and partner

Naruto waited for a few minutes, as he gathered what he had and what he had to do. His mind added things up quickly, 'I have under my hypnotic control a powerful, sexy ninja lady with huge hypno-boobs. Everyone wants her to be Hokage, except our enemies. Once I use the fox's power, she will be hot and young again.

So... how can I use this?'

There was the obvious...

"Tsunade. From this moment on, you are my loyal devoted lover. You are devoted to my protection and happiness. I am and always will be the sexiest man you will ever see." said the eighteen year old, hoping the commands were burrowing into her mind. He recreated his Hypnogan, and occationally sucked her mind into it as he continued to make sure.

"Devoted... Loyal... Lover... Protect... Happy." she repeated in a monotone, as her voice seemed to soak it in.

"You are now my loyal devoted lover and hypnotic partner. You know I have hypnotic powers, like you, but you don't care. Because you find it hot for me to use my hypnotic powers on you or others. It helps that you are bisexual and willing to share me with other woman. Even seducing women to become potential love slaves of mine. Of ours.

When I wake you up after using my powers to make you young again, closer to my age, you will fall completely in love with me. You will become Hokage to be closer to me and keep the village and position safe for me. You will secretly use your powers and abilities to make the village like me, love me, so they will consider me a hero and allow me to become Hokage when the time comes. As well as protect me from dangers." Naruto tried to figure out anything he needed to say or do, before coming back to the last pieces.

"From this moment on, you will love the colour orange. Orange is the coolest, sexiest colour. It makes you feel hot and horny as it reminds you of me. It makes you feel powerful, strong as well. You will love to wear sexy clothing, especially in the shade of orange. You love ramen, the most tasty and delicious food of the gods. But you will not enough to to get fat, but will enjoy it. Especially when eating with me." With that said, as well as a code phrase to place her back in a trance fast if he couldn't use his Hypnogan, he then touched her. Using his power, gained from the Fox, to wake her up and make her younger.