Here is the continuation with Tsunade falling for Naruto's charm:
The next day Naruto requested a long term S-Rank mission from Tsunade to 'prove himself'.
"Baa-chan, I want to show you what I've learned over the years. Give me the most dangerous S-Rank mission you have." said Naruto.
Tsunade raised an eyebrow."Are you sure gaki?"
Naruto gave her a charming smile."Of course! I can handle anything."
Tsunade felt her heart skip a beat seeing his smile. 'What is this feeling?'
"O-Okay. There is an S-Rank mission to infiltrate a dangerous organization called the 'Akatsuki'. Take Sakura and Ino with you." said Tsunade.
"Hai! We'll be back before you know it." replied Naruto winking at her before leaving.
Tsunade held a hand over her racing heart.'Get a hold of yourself!'
Little did she know this was all part of Naruto's plan. Naruto, Sakura and Ino then left the village beginning their 'mission'.
After a few weeks of no contact, Tsunade started to get worried and regretted sending Naruto on the mission. Her feelings for the blonde grew over the weeks of his absence.
One night while doing paperwork, Tsunade fell asleep and woke up in a unfamiliar place. There she saw Naruto with his back facing her.
"N-Naruto? Where am I?" asked a confused Tsunade.
Naruto turned around giving her a sinister grin."Why hello Baa-chan. Surprised to see me?"
"You were part of the Akatsuki the whole time?!" asked Tsunade in disbelief.
"Guilty as charged. I must say you made it easy by trusting me so blindly." replied Naruto.
Tsunade felt betrayed by the boy she viewed as a grandson."Why are you doing this Naruto?!"
Naruto caressed her cheek."Don't you see Baa-chan? Konoha is rotten to the core. But don't worry, I'll make a new world for us."
Tsunade knew she should fight back but looking into his eyes she found herself drawn to his darkness. She had fallen deeply in love with Naruto.
Naruto brushed his lips against hers in a passionate kiss. Tsunade closed her eyes and kissed him back fiercly.
When they parted Naruto whispered in her ear."Will you join me Tsunade?"
Tsunade whispered back."Yes."
Naruto chuckled darkly. His plan had succeeded. Konoha's Hokage had fallen into depravity. Now the real fun would begin.
Tsunade had fallen into the darkness with the man she loved. There was no going back. She would follow Naruto into the pits of hell itself. Her heart belonged to him.