Interesting... So far, she seems a bit different from prior girlfriends, in that her defining trait wasn't really played for comedic value all that much. Sure, she had an outright orgasmic reaction to her first-ever rulebreak, and her mellowed out reaction at the end was pretty cute-funny... but compare this to, say, Hahari and Momoha's unabashed and played-for-laughs debauchery, or even other girlfriends whose quirks initially caught even Rentarou off-guard. This whole chapter, on the other hand, played out in a much more "serious" manner—as in, not much in the way of jokes, making the depicted events feel more grounded and realistic than usual.
I'm curious to see if this will be a mainstay for how her character is treated going forward... or if that newfound fetish of hers will soon become the butt of many, many jokes.