They're pretty good. They especially combine nicely with the rest of Sento's body here. It's just perfect.
Don't sell 'em too short now, with the timeless popularity of pantyshots it was only a matter of time until focus shifted to maximizing the sheer perfection of the female booty. Not to mention the universally beloved ZR draws ample attention to the thighs and legs, and as you said, nice wide hips with a thin waist is undeniable. Add some vagina bones and you've got a recipie for perfection.
Thick thighs makes my dick diamonds. Sento is humanity's best gift to the universe.
i dont know about thighs but sento is the hottest girl ever animated in history.