Black Butler, Vol. 18, ch. 83-87
As I hoped this volume finished with that School Arc, then a filter chapter which was a great fun and a new adventure begins after the Queen sends Ciel to Germany to investigate mysterious deaths.
The new arc seems to be promising. A cursed forest, witches, werewolves and annoyed Ciel who doesn't understand a local dialect. Plus, we might see in future chapters Vincent Phantomhive's childhood friend.