Loved this doujin. Kayako's so good at expressing affection that doesn't rely on words, and even though body language is hardly the most eloquent of mediums, that ambiguity is what makes these interactions so fascinating to watch. What's Yukari's angle here? Is she afraid of losing Reimu to some strange attacker and wants to check on her at night? Is she simply expressing her true feelings, far away from prying eyes and daylight? Is this all part of some elaborate game to get Reimu's attention and keep her from getting infatuated with anyone else? Is Yukari really Maribel, and using Reimu as a stand-in for Renko? Or is she expressing her trust for Reimu by sleeping next to her, when she ordinarily does so completely in secret, in a place nobody in Gensokyo knows to locate? It could be none of these things, and yet all of them at once, and the capacity of this story to make you think and feel in tandem is what makes it so endlessly intriguing, much like the Gap Youkai herself.