Many JAV movies actually take fetishes from hentai and ecchi manga. Up to the adaptation of ero doujinshi. However, sometimes it seems to me that a significant part of Japanese media is simply the cycle of various moe in nature.Author went and took the niche "serious-looking glasses girl but actually assertive" trope in JAVs and adapted it to their manga. I have a feeling there'll be classroom and library flirting in the upcoming chapters.
I dunno about adding but she's been around in this artist's other stuff for a long time now and there's still a few other girls yet to join this seriesDid we need to add another girl who is just an e-slut? Don't we have enough girls already?