These pixiv picture are all linked to each other, it's hard to figure out what's the correct order. So there is something about Yuka spilling her cup of tea on Alice... no, that happens after she strips, and runs out of the house and ends up naked at Reimu's, or on top of Reimu (where Aya makes a photo of the two). Then Reimu gives her miko clothes and has a nosebleed from Alice armpits. The rest I don't know but Yuka appears again.