-Nails as large as a human arm -Kosuzu stuck to a pictureframe(?) by those nails -Akyuu hammering said nails in -Reimu stuck in an adjacent pictureframe(?) by similar looking nails -Similar-looking pictureframes(?) all around, at least three of them have people inside
Okay, I don't think I want to know what's going on...
-Nails as large as a human arm -Kosuzu stuck to a pictureframe(?) by those nails -Akyuu hammering said nails in -Reimu stuck in an adjacent pictureframe(?) by similar looking nails -Similar-looking pictureframes(?) all around, at least three of them have people inside
Okay, I don't think I want to know what's going on...
This is a reference to the album cover of 音 and a reference to the song 忘らるる物語 from the same album. It's not creepy, rather sad.