S1, A1: Sumireko and Adashino work in a quiet bookshop and chat; their manager gives Sumireko a strange book of unknown origins; just after midnight she casually picks it up to read it.

S1, A1: Sumireko and Adashino work in a quiet bookshop and chat; their manager gives Sumireko a strange book of unknown origins; just after midnight she casually picks it up to read it.