why had you to put sayori in it? ddlc whas the first novel i ever played and still triggers some ptsd feelings after 5 years. please don't tell me natsuki is somewhere too, than we have enough for exit music. 
Someone requested that quite some time ago. It's just an easter egg / small cameo appearance like there are quite a few others. Good Catch!
well atleast its not monika. and i recenized more anime characters than you think. and avatar is a cartoon btw
I caught one in the Library opening scene. A certain redhead in a green jumpsuit. I always figured that there was something fishy about Jerry, W@@HP and his three female spies. Totally! :D