Big sis Remilia is telling lil' Flandre the legend of the Strongest Ice Fairy and the Immortal Phoenix while their loyal maid butler covers them in a big blanket so they would stay all warm and cozy.

Although, I have but one question. But why are they still wearing their hats in bed?

Black_Gold_Saw said:
Although, I have but one question. But why are they still wearing their hats in bed?

Didn't you know? Touhous die when you take their hat off. or at least their pride does. Or the world ends. Or something.

soboro said:
Didn't you know? Touhous die when you take their hat off.

The actual answer is fandom laziness :P Same thing with the characters wearing the same clothes over and over, even if ZUN makes a point of changing them from game to game and takes it easy when the illustrators of complementary materials come with alternative outfits.