The story as an idea is interesting but i think it wasnt that well executed. The manga felt like it was just about sex when it came to the MCs, like even the yuke acknowledged that in a chapter, just to go back on being just sex. I mean i would have wanted for them to have more emotional connections and resolving their issues with words, but that's just me.
Also they didn't go back to seme being a childhood friend and being yuke's first crush, also why did the sister remember him and not the yuke? Weird. A lot of missed opportunities
Sit, Wait, Kiss Me