A lot of star trek episodes involved kids, and some of them even had a sexual theme. Do you remember ⛓️‍💥[Removed] from the original series? She was sexually attracted to Kirk, and when the doctor was uncomfortable with the situation, Spock reminded him that although she had the body and the mind of a 12 year old, she was actually older than Kirk so it was all good.

Naomi Wildman ⚠️ ↗ was a main character in Voyager. And how about Marley McClean ⚠️ ↗ and those hot Borg kids? The episode Innocence ⚠️ ↗ was pretty good.

The Next Generation had the episode of Picard stuck on the turbolift with the ⛓️‍💥[Removed]. Then there was the one where some of the crew were turned into their child selves️ ↗. Does a preteen Whoopie Goldberg wanting to jump on a bed ring a bell?

I can't comment on the other series, but plenty of kids come to mind when I think Trek.