"Maybe. Something to look into in your downtime, hm?" Kakashi mused, tilting his head and regarding Sasuke with an appropriately curious look. How he spared thought for such involved subjects when his head was full of cotton wool Kakashi could only wonder (and could only find endearment in considering it was so very reminiscent of himself in his younger years).

Without any time or energy for being sentimental, Kakashi rolled a shoulder in a shrug, changing the subject with a quick shift of his attention.

"I should probably go. The last thing we need is to incubate this by spending time together." Okay, that came out a little ruder than he'd intended, but it was the long and short of his excuse. "There's a time-waster back at my apartment with my name on it." And Jiraiya's name on it, but that wasn't the point.