Tsunade couldn't believe she was resorting to spying, but after what she'd heard...
How could Ino find this cute?
Minato's son had been entrusted into Kakashi's care in the belief that he would care for him, not abuse him. Technically, Naruto had become an "adult" the minute he had put on the headband and became a Genin, but every shinobi over the age of twenty knew better than to mess with said "adults" before they became seventeen or so.
Sixteen was really pushing it, especially when the other person in the relationship was over twenty-five. Sixteen and a student was over the line. Sixteen and a student with the possibility that the relationship had been initiated when said sixteen year-old had been thirteen was way way way over the line.
Looking in the window - feeling vaguely like a pervert - and seeing Kakashi do that to Naruto was...unpleasant. Minato-kun would have been very disappointed in her for allowing this to happen.
If a finger flick was enough to kill a normal man, then a punch would be enough to put Kakashi in the ICU. If this had been a "Naruto started it when he got back and I couldn't control myself." situation, Kakashi would get off with that little warning, be told to keep his hands off Naruto in the future and better yet stay the hell away from him, and never again be entrusted with students. If it wasn't, well there were a few highly unethical medical experiments she wanted to try...
