just want to say how much of a btch madoka is here. the cake and bday preparations she made was all but pretense. she obv wouldnt do that kind of stuff especially to koharu whom she dislikes the most. i mean, i wouldve expect it more from yuzu, since she's that kind of person, ~thougtful.
if the two wouldve made it home and they all celebrated the bday together, koharu wouldve gotten a little happy about it. then madoka would break that happiness right up to koharu's face when she makes it clear that even though its her bday, ryuu still belongs to her that day. showing just how confident she is that the two are definitely coming home implies that she's so sure that no matter how much ryuu was infatuated with koharu, he would still pick her over wife #3. she's so full of herself and outright cunning.