Talking, Sucking, Matching!

That's a good point. Besides being astonishingly poised,
mature, and sexually confident (for a 22-year-old), Mana
is also exceptionally well-dressed and well-groomed.

She seems to be a well-bred, sophisticated young lady,
with a fair amount of sexual experience (enough to test
her "dick-sucking theory," anyway).

I second that motion.
Kohri's The Girl at the Liquor Shop is another
excellent example of an "assertive girl."

We must always draw a clear distinction between an
"assertive girl" and an "aggressive slut." They are not
the same thing. Not at all.

For example, Rokkaku Yasosuke's Satomi-kun is Saying
Something features a couple of (delightfully) aggressive
sluts who are nothing like Mana.

And were it not for the "age reveal" (page 1), plus judging solely on how she conducted herself, I'd have instantly classed her as a Sexy Onee-san!