These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Hollywood Homely: Grenouille is a disheveled, scarred, filthy, bone-thin, and socially inept man, but he's played by the dashing Ben Whishaw. It's questionable whether this is also an example of Adaptational Attractiveness, since the character is clearly supposed to be unattractive.
To be fair, an awful lot of the main film cast are downright gorgeous, considering the time period - most of them still with their hair and teeth and fairly good skin. The massive orgy scene towards the end is a good example of this.
Ear Worm: A fair estimate would be every single from "Electro World" onward.
Judging by the reaction from live audiences, "Polyrhythm", "edge" and "Chocolate Disco" turn fans CRAZY. "Chocolate Disco" and "edge" proved so popular that they each got three separate official mixes.
Growing the Beard: Before "Polyrhythm", Perfume was a quirky, Shibuya-kei-inspired technopop group (to the point where equally next-level single "Electro World" only made a minor dent in the singles charts.) As one NHK documentary put it, "the reason why they are now facing a crowd of 50,000 is because of this hit song." And it shows.
Les Yay: the "Spending all my time" PV has the girls holding hands, grabbing each other's shoulders, and A~chan singing Loving you, so loving you forever to Nocchi's face.
They're seen holding each other in the "I Still Love U" PV.
Narm Charm: Their early dance routines were simplistic and excessively quirky. The routine for "Polyrhythm" is infamous for showing this trope off.