Agree, with Jelf there, The impregnation theory is more than alive. Although it may not be the only thing in itself, it is a connected detail.
black screen, so well it's very clear that this is indicating here at least they had this sex, not to mention what I imagine more times before the reset, with Makoto without worries of getting pregnant. and lately No sex scenes have been explicitly shown in the main story since the beach scene even though they are happening, even if skips her repeatable animation is more than evident.
A couple of additional facts on the subject of RAS, both Ayane and Makoto were previously on the Rooftop before the whole reset/apocalypse thing, Makoto was in a different view, bluejay and until recently in Young Cardinals
Ayane was on the rooftop at Forever Yours (Top of the World) and then she returns, on Nevermind a few hours/moments before the reset.
implying that at least it is related or connected to being ''called'' or visiting the place before. They may be involved in some kind of relationship with Akira.
other information, given that Yumi and Tsuneyo have a connection with all this issue of the world and its resets; without being on the rooftop and reset, since they have already been there.
Yumi has gone up to the rooftop at Contractions, when she asks for help with her lessons.
And where is Tsuneyo's first meeting and her first appearance on the Rooftop. in Tsuneyo Tojo, Stand-up Comedian.
So keep in mind, if you want a girl to go or theorize who will go to the RAS, maybe first you want that girl to go to the rooftop for a bit in some event outside of reset, which could be a good sign.