IRL, we'd tell Shirai-kun, when it comes to Kamisaki-san: "RUN DUDE, ... RUN!!!!!" (seriously, a person who has trouble controlling their libido is equal to a ticking time bomb). 😯😨😱
In the H-Universe, we generally say to Shirai: "You Lucky Bastard!" 🤬🤬🤬
"Not as great as it sounds" -> "Because she's a pervert".
Sorry man, but I don't quite see your point? Surely that can only be a great thing?
...Well, supposing the target of her perversion is you, I suppose. I guess her little habit of jumping customers would be a bit of a problem if they're ready and willing.
Also, it's almost as if her uncontrollable urges are like, instinct or something...So...You sure you aren't dating a succubus?
If she's willing to just customers in the middle of the store, I'm pretty sure this goes beyond my 'girlfriend is a pervert'. More like she's a nymphomaniac.
Luckily this is hentai, so she's probably just a succubus... and you probably won't die.