So Where is Kakashi In Boruto?
I think he’s been sometimes visiting hot springs but mostly going on secret missions. Remember that Kakashi in Boruto is still like 20 years younger than Hiruzen in Part 1 of Naruto. I think the cover story is that he’s visiting hot springs.
I have evidence to support this, of course. The first is that in Boruto episode 106, Kakashi, Mirai, and Guy go visiting a bunch of hot springs, and at first Mirai thought it was an S-Rank mission, but then she found out it was just Kakashi and Guy goofing around because they wanted free time to relax. However, towards the end of the arc, it was revealed that his and Guy’s mission was to investigate young people going missing.
Long story short, the cover story for the mission was that Kakashi and Guy were visiting hot springs.
SPOILERS BORUTO BELOW:
In the Kakashi Retsuden novel, he goes to the Land of Rikka on an S-rank mission, and long story short, when he returned to the village and Mitsuki asks where he has been since he’s hardly seen in the village, Kakashi responds by saying he’s been visiting hot springs.
Kakashi is still too young to have retired from Ninja duty. We also know that the village has some small knowledge of the Kara organization. So, logically, after Team 7 defeated Kaguya and learned that there was a whole clan of beings as strong as her, it only makes sense for Kakashi to keep in top shape to help out whenever or however he could.