Some images from K novel side:red which explains the bond between Mikoto, Izumo and Totsuka; Anna's story and Yata and Fushimi (who apparently is less creepy) joining into HOMRA
And here from the blue side novel
There's someone who resembles Kuro (can't say if it's a boy or a girl) and guess the man with the scar is the previous king?
If I'm not allowed to post them I'll delete it