Seems legit, but I always imagined Mokou to be a bit of a shut in towards people, and I always think that in real life I would like someone that acts like Kaguya over than Mokou. But that's just me. .-.
Good argument. But it says that Kaguya likes to tell stories about her days in the Luanr Capital to people that come across The House Of Eternity, and Mokou's only really good friend is Keine and no one else.