...is that a real thing in the last panel? A "hair pouch" to prevent the long hair from being damaged while sleeping?
There is something called the "baggy method" which is basically putting a plastic bag over a moisturized hair to keep the moisture locked in and promote hair growth. Kaguya's probably doing that.
There's always a chance she simply wouldn't trust us.
No, there isn't.
Fufu.*yawn...*It's about time we slept.You go ahead.I'll stay a while longer.Of course...Is that so.