An interesting option. With everyone on my home map in [Love] and in a sexual relationship as well, inviting Kaguya the yandere princess is definitely good. Nothing bad could ever happen, right?There's no reason to not accept, it basically makes her move to an empty room inside your home map, the only difference is that, by staying in the same map, she'll be more accesible, work schedules and such will remain the same, be careful though, if you have multiple lovers, everyone will ask for the same, if you reject them they go away saddened, but that's it as far as i know.
.....right?