The Shina Dark music videos are made up of 2 OP's and 2 ED's (i think). i can't say much about them as at the tim of writing this review they haven't been subbed. all i can really say is fans of the manga will enjoy this as you finally get to see the characters animated. to people who haven't read the manga it's a quick 8 min video, which will contribute to your completed list. I personally enjoyed this as i watched it straight after reading the manga which i reccomend you to read also