That's odd, I'm pretty sure I remember giving Miku a good fuck when Matsu checked out the swim club sometime in week 3? Or I could be misremembering. Kaede is a case where we've fucked her mom and her lil sis and have seen Kaede or she seen us naked twice now, but she is totally uncomfortable with sex. She's not gonna be a quick fuck like some other girls. She's the prim and proper good girl after all. And while we haven't advanced with her sexually yet, it felt damn good telling off her mom finally.
Yes there is an Anal scene of all things with Miku at the swim club but after being so predominant in week one you ironically see far less of her after not only guaranteeing her placement at school but also after getting her a job at the club. She goes from constantly meeting the sensei at school and hanging out with Himiko to neither happening anymore (in fact Himiko now only really associates with science club regulars as far as I can tell) but you also no longer Can get scenes where you have dinner with students (like classroom scenes these seem to have been abandoned with instead one sentence references of him eating with certain students).
The anal swim scene just feels out of nowhere - she just happened to be there when you did and with little prompting you talk her into her first ever penetrative experience then quickly bugger off and leave her again lol. Felt the first week at least they were building things up with her, he even had thoughts in regards to corrupting her but it looks like hes already succeeded. She was hinted as being something of a love struck stalker in week 2 as well as using Himiko to get close to him in week one and was dressing slutty to seduce him (as well as getting threatened by Fuyu over her interest In him then too) but all that has been dropped and hes just kinda won already. Shes corrupted, is making less effort and so he doesn't need to nor does the story have to. It was anti-climatic. She was also at Art club arguing with some of the other rarely seen students (T8s no less which was a good thing at least IMO) but I think that was about it week 3 with her.
Ive no issue with the slow build up to finally having sex with her but lets compare her to Tomoe as the game literally made you choose between them at the start on day one. Can we honestly say there has even been close to as much Kaede story and development as there has been with Tomoe? Whom of course has had content featuring everything from secret places to chill with the sensei, multiple threesomes, family dinners, secret BJs at class, several martial arts club scenarios, is a member of the club we're guaranteed to be seeing much more of (as it has also not just got Mao but Fuyu present as well as several other Sensei class reps and a big martial arts content on horizon hes training them up for) or and of course all the dedicated storyline given to the banned students drama.
What has Kaeda had compared to all that? There isnt even much on the horizon for Kaede i can think of. The barely mentioned graffitti vandal? the rarely seen Disciplinary club? (of which when seen tend to be other members instead of her haha) or maybe her family? (who all get plenty of scenes and often are seen with each other but rarely her). I suppose defending her over her mothers jibes is a start but not seeing how it can develop into any big storyline going forward nor with Aki manager arc, same with shower scenes so far or the first kiss. Not a lot going on that i can see but thats just my opinion. Maybe BC simply is more passionate about writing other characters who have a bit more definded characteristsics to build on.