okay but imagine this…Kakashi passes team seven as per usual but he gets home and his first thought is, “how the hell am i going to let these kids know i at least somewhat care about their well being?” It bothers him all day and night until finally, sleep deprivation works it’s magic and he’s like, “I KNOW!! A good hand resting on your head for an uncomfortable amount of time ought to do the trick!” And then he meets with them and the first thing he does is slap his hand on Sasuke’s head and just stares at him with an intense passion to show he cares in his wild-looking eyes. “Yes. Yes. Hand on head, caring.”
And eventually it just sticks and genin baby Team Seven just suck it up and deal with it.
Walk of Shame: “We’ve been flirting like crazy for two years, had sexual tension for four years, been comrades for six years, and known each other for ten years, we’re finally about to do it and this is what you say to me?” (Sakura must be 22.)
To Give Is To Receive: Sukea: “It’s been over ten years since I showed my face out here, so…” Sakura must be at least 23. (I actually mentally assumed her to be around 26 or 27 in this story, and for her and Kakashi to have gotten married when she was around 21.)
And of course, the Shinobi world isn’t Japan. In Japan, this kind of thing is not legal:
Ah, remember when Anko told a bunch of thirteen year olds the rules permitted killing each other with no penalty? Remember how Gaara did kill some other teenagers with no penalty? Good times.
Moreover, in the manga, Shikamaru is shown smoking at age sixteen, which is definitely under the legal age in Japan, and nobody gives a shit, including when he’s smoking right in front of the Hokage.
Basically, absent any information in canon about what the age of consent is and how strictly it’s enforced (because a law that isn’t actually enforced might as well not exist), I honestly don’t have any problem with fic that depicts Sakura having a sexual relationship with Kakashi aged 16-17, even though I don’t write it myself. I mean, I enjoy Sense and Sensibility, in which 35-year-old Colonel Brandon falls in love with 16-year-old Marianne Dashwood. I have different standards for historical and fantasy works than for modern real life.
If it squicks you, that’s valid! You don’t have to read it! :D