Hm.. this game is like a tribute to recent game created by chinese dev that has been onhold or might be abandoned because their region's strict law (the one with Cthulhu and same graphic as this one)
Oh right, for those who struggle the storeroom worm thing, pick the penny on the art room and buy a weird thing on vending machine to pass...
Go to the library on the 3rd floor while still wearing the normal school uniform. Nothing to see really, she just talks about books and then finds a diary page.