hey I love ur analysis! but I just wanna clarify as an ace person that having a low libido doesn't equate to being asexual. from what I interpret from her inner thoughts about sex and her intentions with it I'd say she's probably just a character with a low sex drive? nowadays there are lots of microlabels for people who sees being ace a spectrum but personally I like to keep it simple and say she's probably closer to an allo person with a low sex drive
thats how I see it anyways
Yeah you're right, I just mentioned the possibility of it and it did not stem from her disgust towards sex or anything (which obviously is imposed by the societal stigma and her own personal experience) rather inclining towards the idea of her being in a space isolated from the stigma and how would she have then formed her relationship with romance and sex which could be anything, does not depend on anyone's view.

I'm writing this because I saw this discourse on X on the ultimate scene which led to Miwa and Tamaki's breakup which is so traumatizing and complex. I don't know what to call that scene, SA (for both the parties) or something beyond that.
They had a great start. Then we get to know that Tamaki has a very low libido and might just not like sex at all, she leans towards asexuality. Sex is a sort of pressure to her imposed by the society. She can have meaningless sex for the happiness of her partner even if she might not have wanted it at all.
On the other hand Miwa is somewhat insecure or needs to feel sense of security from every action of her partner. She needs that extreme care. Sex is the highest form of closeness she demands. She's not a pervert but someone who just has a different love language than Tamaki. Tamaki's 'I will do it if my partner wants it's attitude triggered her insecurity. It also resulted in neglect of Miwa's needs. Since her sense of self is also linked to her partner's opinions she took Tamaki's disgust towards sex implying her disgust towards her high libido.
Both of them hit low when Miwa tries to repress her urges which ofcourse will make Tamaki anxious. They try to find a way to love each other which makes the other feel whole but leaves them incomplete and resentful. All of this finally erupts in the penultimate scene where Tamaki has an outburst. From my pov I see this scene as an SA to both Tamaki and Miwa since none of them want it to happen. Miwa took her crude words as an abuse to her liking for sex. Both as a result of that SA and her own mind going to survival mode she starts to feel repulsed to her own urges.
Tamaki gets an instant regret but she does not want to breakup. Miwa has consciously stopped trying for their relationship hence the breakup was a revival for her. To keep it brief, their breakup convo was just hurt equals hurt.
Ofcourse it does feel weird when Miwa reconnects with Tamaki, she chose to forgive her and that's her decision. Tamaki got karma, she remains in regret and longing for Miwa.
This also does not mean that we should treat all the characters either like some saint or the worst person on earth.
(This whole thing cannot be equated to the FWB situation which happened to Miwa Saeko when Miwa was depressed over rejection. Yes it was a toxic situation but you cannot compare the destruction.)