I feel conflicted that my first thought was: "Oh how sweet she had a wet dream, she hit puberty."
...No, wait, she's not a kid, stop that...
It just occurred to me that even how prevalent "100 years old lolis" are in anime, I don't recall ever seeing them actually facilitate the relationship, so their "affection" never seemed too odd. But here it is, a young-teen-looking-girl sexing it up. Uh.
...No, that's not true. It happens a fuckton in visual novels. It was weird as fuck there too.
EDIT: something tells me the replies to this comment are going to be wild.