Yeah as mentioned, talent isn't even that great
There are indeed certain items where it's pretty badass. For example a `Magic Idiot` sexy robe with talent will boost the robe into proper def levels, and all of a sudden it's a pretty darn good robe. In fact, most cloths with talent are nice. But so are weapons which pretty much get next tier damage with it. Not all of them, but most. But you're right, instead of talent, you'd rather get an extra +10 something useful. The later in the game anyways, as slight attack boost become negligible.
I also leveled Sachiko's lewd school dress. Grew almost nothing, but you can get a pretty amazing -20% physical damage. Still a shit cloth piece in comparison, but that bonus is really nice. I ended up with talent on level 9 (50 def, 52 resist, 20 resil, 1 sex, Talent 0%), however, and it almost does nothing.
Crane's puncher doesn't amount to much either on level 9, but you can push stun to over 100, and get some additional evasion, critical, effective against or an attribute. Atk stays at 5 +/-5 maybe.
As for the naginata, I ended up on level 9 with: 532 atk, 190 magic (never changes), 20 acc, 45 def and +10 critical. IMHO still a pretty shitty weapon, despite her special dance move. I think I'll just give her a proper spear and spear fury all the way. That will yield better results. Don't know, maybe early on naginata is kind of good?
Okay, so what does "coolness" and "sexiness" do?