So, Karneval added a bunch of new stuff to its website right before the anime broadcast started, including finally opening up the Story page. See below for the translations.
Karneval’s story page, featuring episode summaries.
Here is the translation of Karneval’s official Twitter.
Karneval’s TV commercial.
Karneval’s first PV, featuring main characters Nai and Gareki.
Extra bits of information, such as event info and PVs.
A list of Karneval anime goods, CDs, Blu-rays, and DVDs.